18918993760

素因数分解:

$2^5\times 5^1\times {\mathrm{659}}^1\times {\mathrm{179429}}^1$

素因数の和:180103

約数の個数: 48

約数和(自身を含む): 44764196400

約数和(自身を除く): 25845202640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 659, 1318, 2636, 3295, 5272, 6590, 10544, 13180, 21088, 26360, 52720, 105440, 179429, 358858, 717716, 897145, 1435432, 1794290, 2870864, 3588580, 5741728, 7177160, 14354320, 28708640, 118243711, 236487422, 472974844, 591218555, 945949688, 1182437110, 1891899376, 2364874220, 3783798752, 4729748440, 9459496880, 18918993760]

約数ペア:

[(1, 18918993760), (2, 9459496880), (4, 4729748440), (5, 3783798752), (8, 2364874220), (10, 1891899376), (16, 1182437110), (20, 945949688), (32, 591218555), (40, 472974844), (80, 236487422), (160, 118243711), (659, 28708640), (1318, 14354320), (2636, 7177160), (3295, 5741728), (5272, 3588580), (6590, 2870864), (10544, 1794290), (13180, 1435432), (21088, 897145), (26360, 717716), (52720, 358858), (105440, 179429)]