64889920

素因数分解:

$2^6\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1019}}^1$

素因数の和:1235

約数の個数: 56

約数和(自身を含む): 155448000

約数和(自身を除く): 90558080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 199, 320, 398, 796, 995, 1019, 1592, 1990, 2038, 3184, 3980, 4076, 5095, 6368, 7960, 8152, 10190, 12736, 15920, 16304, 20380, 31840, 32608, 40760, 63680, 65216, 81520, 163040, 202781, 326080, 405562, 811124, 1013905, 1622248, 2027810, 3244496, 4055620, 6488992, 8111240, 12977984, 16222480, 32444960, 64889920]

約数ペア:

[(1, 64889920), (2, 32444960), (4, 16222480), (5, 12977984), (8, 8111240), (10, 6488992), (16, 4055620), (20, 3244496), (32, 2027810), (40, 1622248), (64, 1013905), (80, 811124), (160, 405562), (199, 326080), (320, 202781), (398, 163040), (796, 81520), (995, 65216), (1019, 63680), (1592, 40760), (1990, 32608), (2038, 31840), (3184, 20380), (3980, 16304), (4076, 15920), (5095, 12736), (6368, 10190), (7960, 8152)]