20564060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{443}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 47440512

約数和(自身を除く): 26876452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 211, 220, 422, 443, 844, 886, 1055, 1772, 2110, 2215, 2321, 4220, 4430, 4642, 4873, 8860, 9284, 9746, 11605, 19492, 23210, 24365, 46420, 48730, 93473, 97460, 186946, 373892, 467365, 934730, 1028203, 1869460, 2056406, 4112812, 5141015, 10282030, 20564060]

約数ペア:

[(1, 20564060), (2, 10282030), (4, 5141015), (5, 4112812), (10, 2056406), (11, 1869460), (20, 1028203), (22, 934730), (44, 467365), (55, 373892), (110, 186946), (211, 97460), (220, 93473), (422, 48730), (443, 46420), (844, 24365), (886, 23210), (1055, 19492), (1772, 11605), (2110, 9746), (2215, 9284), (2321, 8860), (4220, 4873), (4430, 4642)]