123285760

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 329656320

約数和(自身を除く): 206370560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 239, 248, 256, 260, 310, 320, 403, 416, 478, 496, 520, 620, 640, 806, 832, 956, 992, 1040, 1195, 1240, 1280, 1612, 1664, 1912, 1984, 2015, 2080, 2390, 2480, 3107, 3224, 3328, 3824, 3968, 4030, 4160, 4780, 4960, 6214, 6448, 7409, 7648, 7936, 8060, 8320, 9560, 9920, 12428, 12896, 14818, 15296, 15535, 16120, 16640, 19120, 19840, 24856, 25792, 29636, 30592, 31070, 32240, 37045, 38240, 39680, 49712, 51584, 59272, 61184, 62140, 64480, 74090, 76480, 96317, 99424, 103168, 118544, 124280, 128960, 148180, 152960, 192634, 198848, 237088, 248560, 257920, 296360, 305920, 385268, 397696, 474176, 481585, 497120, 515840, 592720, 770536, 795392, 948352, 963170, 994240, 1185440, 1541072, 1896704, 1926340, 1988480, 2370880, 3082144, 3852680, 3976960, 4741760, 6164288, 7705360, 9483520, 12328576, 15410720, 24657152, 30821440, 61642880, 123285760]

約数ペア:

[(1, 123285760), (2, 61642880), (4, 30821440), (5, 24657152), (8, 15410720), (10, 12328576), (13, 9483520), (16, 7705360), (20, 6164288), (26, 4741760), (31, 3976960), (32, 3852680), (40, 3082144), (52, 2370880), (62, 1988480), (64, 1926340), (65, 1896704), (80, 1541072), (104, 1185440), (124, 994240), (128, 963170), (130, 948352), (155, 795392), (160, 770536), (208, 592720), (239, 515840), (248, 497120), (256, 481585), (260, 474176), (310, 397696), (320, 385268), (403, 305920), (416, 296360), (478, 257920), (496, 248560), (520, 237088), (620, 198848), (640, 192634), (806, 152960), (832, 148180), (956, 128960), (992, 124280), (1040, 118544), (1195, 103168), (1240, 99424), (1280, 96317), (1612, 76480), (1664, 74090), (1912, 64480), (1984, 62140), (2015, 61184), (2080, 59272), (2390, 51584), (2480, 49712), (3107, 39680), (3224, 38240), (3328, 37045), (3824, 32240), (3968, 31070), (4030, 30592), (4160, 29636), (4780, 25792), (4960, 24856), (6214, 19840), (6448, 19120), (7409, 16640), (7648, 16120), (7936, 15535), (8060, 15296), (8320, 14818), (9560, 12896), (9920, 12428)]