645057920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:165

約数の個数: 256

約数和(自身を含む): 1784885760

約数和(自身を除く): 1139827840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 41, 52, 61, 62, 64, 65, 80, 82, 104, 122, 124, 128, 130, 155, 160, 164, 205, 208, 244, 248, 260, 305, 310, 320, 328, 403, 410, 416, 488, 496, 520, 533, 610, 620, 640, 656, 793, 806, 820, 832, 976, 992, 1040, 1066, 1220, 1240, 1271, 1312, 1586, 1612, 1640, 1664, 1891, 1952, 1984, 2015, 2080, 2132, 2440, 2480, 2501, 2542, 2624, 2665, 3172, 3224, 3280, 3782, 3904, 3965, 3968, 4030, 4160, 4264, 4880, 4960, 5002, 5084, 5248, 5330, 6344, 6355, 6448, 6560, 7564, 7808, 7930, 8060, 8320, 8528, 9455, 9760, 9920, 10004, 10168, 10660, 12505, 12688, 12710, 12896, 13120, 15128, 15860, 16120, 16523, 17056, 18910, 19520, 19840, 20008, 20336, 21320, 24583, 25010, 25376, 25420, 25792, 26240, 30256, 31720, 32240, 32513, 33046, 34112, 37820, 39040, 40016, 40672, 42640, 49166, 50020, 50752, 50840, 51584, 60512, 63440, 64480, 65026, 66092, 68224, 75640, 77531, 80032, 81344, 82615, 85280, 98332, 100040, 101504, 101680, 121024, 122915, 126880, 128960, 130052, 132184, 151280, 155062, 160064, 162565, 162688, 165230, 170560, 196664, 200080, 203360, 242048, 245830, 253760, 257920, 260104, 264368, 302560, 310124, 320128, 325130, 330460, 341120, 387655, 393328, 400160, 406720, 491660, 507520, 520208, 528736, 605120, 620248, 650260, 660920, 775310, 786656, 800320, 813440, 983320, 1007903, 1040416, 1057472, 1210240, 1240496, 1300520, 1321840, 1550620, 1573312, 1600640, 1966640, 2015806, 2080832, 2114944, 2480992, 2601040, 2643680, 3101240, 3146624, 3933280, 4031612, 4161664, 4961984, 5039515, 5202080, 5287360, 6202480, 7866560, 8063224, 9923968, 10079030, 10404160, 10574720, 12404960, 15733120, 16126448, 20158060, 20808320, 24809920, 32252896, 40316120, 49619840, 64505792, 80632240, 129011584, 161264480, 322528960, 645057920]

約数ペア:

[(1, 645057920), (2, 322528960), (4, 161264480), (5, 129011584), (8, 80632240), (10, 64505792), (13, 49619840), (16, 40316120), (20, 32252896), (26, 24809920), (31, 20808320), (32, 20158060), (40, 16126448), (41, 15733120), (52, 12404960), (61, 10574720), (62, 10404160), (64, 10079030), (65, 9923968), (80, 8063224), (82, 7866560), (104, 6202480), (122, 5287360), (124, 5202080), (128, 5039515), (130, 4961984), (155, 4161664), (160, 4031612), (164, 3933280), (205, 3146624), (208, 3101240), (244, 2643680), (248, 2601040), (260, 2480992), (305, 2114944), (310, 2080832), (320, 2015806), (328, 1966640), (403, 1600640), (410, 1573312), (416, 1550620), (488, 1321840), (496, 1300520), (520, 1240496), (533, 1210240), (610, 1057472), (620, 1040416), (640, 1007903), (656, 983320), (793, 813440), (806, 800320), (820, 786656), (832, 775310), (976, 660920), (992, 650260), (1040, 620248), (1066, 605120), (1220, 528736), (1240, 520208), (1271, 507520), (1312, 491660), (1586, 406720), (1612, 400160), (1640, 393328), (1664, 387655), (1891, 341120), (1952, 330460), (1984, 325130), (2015, 320128), (2080, 310124), (2132, 302560), (2440, 264368), (2480, 260104), (2501, 257920), (2542, 253760), (2624, 245830), (2665, 242048), (3172, 203360), (3224, 200080), (3280, 196664), (3782, 170560), (3904, 165230), (3965, 162688), (3968, 162565), (4030, 160064), (4160, 155062), (4264, 151280), (4880, 132184), (4960, 130052), (5002, 128960), (5084, 126880), (5248, 122915), (5330, 121024), (6344, 101680), (6355, 101504), (6448, 100040), (6560, 98332), (7564, 85280), (7808, 82615), (7930, 81344), (8060, 80032), (8320, 77531), (8528, 75640), (9455, 68224), (9760, 66092), (9920, 65026), (10004, 64480), (10168, 63440), (10660, 60512), (12505, 51584), (12688, 50840), (12710, 50752), (12896, 50020), (13120, 49166), (15128, 42640), (15860, 40672), (16120, 40016), (16523, 39040), (17056, 37820), (18910, 34112), (19520, 33046), (19840, 32513), (20008, 32240), (20336, 31720), (21320, 30256), (24583, 26240), (25010, 25792), (25376, 25420)]