20899216

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 60

約数和(自身を含む): 44930160

約数和(自身を除く): 24030944

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 131, 169, 208, 236, 262, 338, 472, 524, 676, 767, 944, 1048, 1352, 1534, 1703, 2096, 2704, 3068, 3406, 6136, 6812, 7729, 9971, 12272, 13624, 15458, 19942, 22139, 27248, 30916, 39884, 44278, 61832, 79768, 88556, 100477, 123664, 159536, 177112, 200954, 354224, 401908, 803816, 1306201, 1607632, 2612402, 5224804, 10449608, 20899216]

約数ペア:

[(1, 20899216), (2, 10449608), (4, 5224804), (8, 2612402), (13, 1607632), (16, 1306201), (26, 803816), (52, 401908), (59, 354224), (104, 200954), (118, 177112), (131, 159536), (169, 123664), (208, 100477), (236, 88556), (262, 79768), (338, 61832), (472, 44278), (524, 39884), (676, 30916), (767, 27248), (944, 22139), (1048, 19942), (1352, 15458), (1534, 13624), (1703, 12272), (2096, 9971), (2704, 7729), (3068, 6812), (3406, 6136)]