18021440

素因数分解:

$2^6\times 5^1\times {\mathrm{199}}^1\times {\mathrm{283}}^1$

素因数の和:499

約数の個数: 56

約数和(自身を含む): 43281600

約数和(自身を除く): 25260160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 199, 283, 320, 398, 566, 796, 995, 1132, 1415, 1592, 1990, 2264, 2830, 3184, 3980, 4528, 5660, 6368, 7960, 9056, 11320, 12736, 15920, 18112, 22640, 31840, 45280, 56317, 63680, 90560, 112634, 225268, 281585, 450536, 563170, 901072, 1126340, 1802144, 2252680, 3604288, 4505360, 9010720, 18021440]

約数ペア:

[(1, 18021440), (2, 9010720), (4, 4505360), (5, 3604288), (8, 2252680), (10, 1802144), (16, 1126340), (20, 901072), (32, 563170), (40, 450536), (64, 281585), (80, 225268), (160, 112634), (199, 90560), (283, 63680), (320, 56317), (398, 45280), (566, 31840), (796, 22640), (995, 18112), (1132, 15920), (1415, 12736), (1592, 11320), (1990, 9056), (2264, 7960), (2830, 6368), (3184, 5660), (3980, 4528)]