19997777656

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{304807}}^1$

素因数の和:305011

約数の個数: 32

約数和(自身を含む): 38405808000

約数和(自身を除く): 18408030344

約数列:

[1, 2, 4, 8, 59, 118, 139, 236, 278, 472, 556, 1112, 8201, 16402, 32804, 65608, 304807, 609614, 1219228, 2438456, 17983613, 35967226, 42368173, 71934452, 84736346, 143868904, 169472692, 338945384, 2499722207, 4999444414, 9998888828, 19997777656]

約数ペア:

[(1, 19997777656), (2, 9998888828), (4, 4999444414), (8, 2499722207), (59, 338945384), (118, 169472692), (139, 143868904), (236, 84736346), (278, 71934452), (472, 42368173), (556, 35967226), (1112, 17983613), (8201, 2438456), (16402, 1219228), (32804, 609614), (65608, 304807)]