20451808

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{233}}^1$

素因数の和:467

約数の個数: 48

約数和(自身を含む): 43754256

約数和(自身を除く): 23302448

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 211, 233, 416, 422, 466, 844, 932, 1688, 1864, 2743, 3029, 3376, 3728, 5486, 6058, 6752, 7456, 10972, 12116, 21944, 24232, 43888, 48464, 49163, 87776, 96928, 98326, 196652, 393304, 639119, 786608, 1278238, 1573216, 2556476, 5112952, 10225904, 20451808]

約数ペア:

[(1, 20451808), (2, 10225904), (4, 5112952), (8, 2556476), (13, 1573216), (16, 1278238), (26, 786608), (32, 639119), (52, 393304), (104, 196652), (208, 98326), (211, 96928), (233, 87776), (416, 49163), (422, 48464), (466, 43888), (844, 24232), (932, 21944), (1688, 12116), (1864, 10972), (2743, 7456), (3029, 6752), (3376, 6058), (3728, 5486)]