400804968976

素因数分解:

$2^4\times {\mathrm{211}}^1\times {\mathrm{118721851}}^1$

素因数の和:118722070

約数の個数: 20

約数和(自身を含む): 780240011344

約数和(自身を除く): 379435042368

約数列:

[1, 2, 4, 8, 16, 211, 422, 844, 1688, 3376, 118721851, 237443702, 474887404, 949774808, 1899549616, 25050310561, 50100621122, 100201242244, 200402484488, 400804968976]

約数ペア:

[(1, 400804968976), (2, 200402484488), (4, 100201242244), (8, 50100621122), (16, 25050310561), (211, 1899549616), (422, 949774808), (844, 474887404), (1688, 237443702), (3376, 118721851)]