638287520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:599

約数の個数: 192

約数和(自身を含む): 1767951360

約数和(自身を除く): 1129663840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 31, 32, 38, 40, 52, 62, 65, 76, 80, 95, 104, 124, 130, 152, 155, 160, 190, 208, 247, 248, 260, 304, 310, 380, 403, 416, 494, 496, 520, 521, 589, 608, 620, 760, 806, 988, 992, 1040, 1042, 1178, 1235, 1240, 1520, 1612, 1976, 2015, 2080, 2084, 2356, 2470, 2480, 2605, 2945, 3040, 3224, 3952, 4030, 4168, 4712, 4940, 4960, 5210, 5890, 6448, 6773, 7657, 7904, 8060, 8336, 9424, 9880, 9899, 10420, 11780, 12896, 13546, 15314, 16120, 16151, 16672, 18848, 19760, 19798, 20840, 23560, 27092, 30628, 32240, 32302, 33865, 38285, 39520, 39596, 41680, 47120, 49495, 54184, 61256, 64480, 64604, 67730, 76570, 79192, 80755, 83360, 94240, 98990, 108368, 122512, 128687, 129208, 135460, 153140, 158384, 161510, 197980, 209963, 216736, 245024, 257374, 258416, 270920, 306280, 306869, 316768, 323020, 395960, 419926, 514748, 516832, 541840, 612560, 613738, 643435, 646040, 791920, 839852, 1029496, 1049815, 1083680, 1225120, 1227476, 1286870, 1292080, 1534345, 1583840, 1679704, 2058992, 2099630, 2454952, 2573740, 2584160, 3068690, 3359408, 3989297, 4117984, 4199260, 4909904, 5147480, 6137380, 6718816, 7978594, 8398520, 9819808, 10294960, 12274760, 15957188, 16797040, 19946485, 20589920, 24549520, 31914376, 33594080, 39892970, 49099040, 63828752, 79785940, 127657504, 159571880, 319143760, 638287520]

約数ペア:

[(1, 638287520), (2, 319143760), (4, 159571880), (5, 127657504), (8, 79785940), (10, 63828752), (13, 49099040), (16, 39892970), (19, 33594080), (20, 31914376), (26, 24549520), (31, 20589920), (32, 19946485), (38, 16797040), (40, 15957188), (52, 12274760), (62, 10294960), (65, 9819808), (76, 8398520), (80, 7978594), (95, 6718816), (104, 6137380), (124, 5147480), (130, 4909904), (152, 4199260), (155, 4117984), (160, 3989297), (190, 3359408), (208, 3068690), (247, 2584160), (248, 2573740), (260, 2454952), (304, 2099630), (310, 2058992), (380, 1679704), (403, 1583840), (416, 1534345), (494, 1292080), (496, 1286870), (520, 1227476), (521, 1225120), (589, 1083680), (608, 1049815), (620, 1029496), (760, 839852), (806, 791920), (988, 646040), (992, 643435), (1040, 613738), (1042, 612560), (1178, 541840), (1235, 516832), (1240, 514748), (1520, 419926), (1612, 395960), (1976, 323020), (2015, 316768), (2080, 306869), (2084, 306280), (2356, 270920), (2470, 258416), (2480, 257374), (2605, 245024), (2945, 216736), (3040, 209963), (3224, 197980), (3952, 161510), (4030, 158384), (4168, 153140), (4712, 135460), (4940, 129208), (4960, 128687), (5210, 122512), (5890, 108368), (6448, 98990), (6773, 94240), (7657, 83360), (7904, 80755), (8060, 79192), (8336, 76570), (9424, 67730), (9880, 64604), (9899, 64480), (10420, 61256), (11780, 54184), (12896, 49495), (13546, 47120), (15314, 41680), (16120, 39596), (16151, 39520), (16672, 38285), (18848, 33865), (19760, 32302), (19798, 32240), (20840, 30628), (23560, 27092)]