20541808

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4957}}^1$

素因数の和:5009

約数の個数: 40

約数和(自身を含む): 46724192

約数和(自身を除く): 26182384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 4957, 9914, 19828, 34699, 39656, 69398, 79312, 138796, 183409, 277592, 366818, 555184, 733636, 1283863, 1467272, 2567726, 2934544, 5135452, 10270904, 20541808]

約数ペア:

[(1, 20541808), (2, 10270904), (4, 5135452), (7, 2934544), (8, 2567726), (14, 1467272), (16, 1283863), (28, 733636), (37, 555184), (56, 366818), (74, 277592), (112, 183409), (148, 138796), (259, 79312), (296, 69398), (518, 39656), (592, 34699), (1036, 19828), (2072, 9914), (4144, 4957)]