128461840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{829}}^1$

素因数の和:1004

約数の個数: 80

約数和(自身を含む): 324198000

約数和(自身を除く): 195736160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 149, 208, 260, 298, 520, 596, 745, 829, 1040, 1192, 1490, 1658, 1937, 2384, 2980, 3316, 3874, 4145, 5960, 6632, 7748, 8290, 9685, 10777, 11920, 13264, 15496, 16580, 19370, 21554, 30992, 33160, 38740, 43108, 53885, 66320, 77480, 86216, 107770, 123521, 154960, 172432, 215540, 247042, 431080, 494084, 617605, 862160, 988168, 1235210, 1605773, 1976336, 2470420, 3211546, 4940840, 6423092, 8028865, 9881680, 12846184, 16057730, 25692368, 32115460, 64230920, 128461840]

約数ペア:

[(1, 128461840), (2, 64230920), (4, 32115460), (5, 25692368), (8, 16057730), (10, 12846184), (13, 9881680), (16, 8028865), (20, 6423092), (26, 4940840), (40, 3211546), (52, 2470420), (65, 1976336), (80, 1605773), (104, 1235210), (130, 988168), (149, 862160), (208, 617605), (260, 494084), (298, 431080), (520, 247042), (596, 215540), (745, 172432), (829, 154960), (1040, 123521), (1192, 107770), (1490, 86216), (1658, 77480), (1937, 66320), (2384, 53885), (2980, 43108), (3316, 38740), (3874, 33160), (4145, 30992), (5960, 21554), (6632, 19370), (7748, 16580), (8290, 15496), (9685, 13264), (10777, 11920)]