18516080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:474

約数の個数: 80

約数和(自身を含む): 47970144

約数和(自身を除く): 29454064

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 53, 55, 80, 88, 106, 110, 176, 212, 220, 265, 397, 424, 440, 530, 583, 794, 848, 880, 1060, 1166, 1588, 1985, 2120, 2332, 2915, 3176, 3970, 4240, 4367, 4664, 5830, 6352, 7940, 8734, 9328, 11660, 15880, 17468, 21041, 21835, 23320, 31760, 34936, 42082, 43670, 46640, 69872, 84164, 87340, 105205, 168328, 174680, 210410, 231451, 336656, 349360, 420820, 462902, 841640, 925804, 1157255, 1683280, 1851608, 2314510, 3703216, 4629020, 9258040, 18516080]

約数ペア:

[(1, 18516080), (2, 9258040), (4, 4629020), (5, 3703216), (8, 2314510), (10, 1851608), (11, 1683280), (16, 1157255), (20, 925804), (22, 841640), (40, 462902), (44, 420820), (53, 349360), (55, 336656), (80, 231451), (88, 210410), (106, 174680), (110, 168328), (176, 105205), (212, 87340), (220, 84164), (265, 69872), (397, 46640), (424, 43670), (440, 42082), (530, 34936), (583, 31760), (794, 23320), (848, 21835), (880, 21041), (1060, 17468), (1166, 15880), (1588, 11660), (1985, 9328), (2120, 8734), (2332, 7940), (2915, 6352), (3176, 5830), (3970, 4664), (4240, 4367)]