20316530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 43273440

約数和(自身を除く): 22956910

約数列:

[1, 2, 5, 10, 13, 17, 26, 29, 34, 58, 65, 85, 130, 145, 170, 221, 290, 317, 377, 442, 493, 634, 754, 986, 1105, 1585, 1885, 2210, 2465, 3170, 3770, 4121, 4930, 5389, 6409, 8242, 9193, 10778, 12818, 18386, 20605, 26945, 32045, 41210, 45965, 53890, 64090, 70057, 91930, 119509, 140114, 156281, 239018, 312562, 350285, 597545, 700570, 781405, 1195090, 1562810, 2031653, 4063306, 10158265, 20316530]

約数ペア:

[(1, 20316530), (2, 10158265), (5, 4063306), (10, 2031653), (13, 1562810), (17, 1195090), (26, 781405), (29, 700570), (34, 597545), (58, 350285), (65, 312562), (85, 239018), (130, 156281), (145, 140114), (170, 119509), (221, 91930), (290, 70057), (317, 64090), (377, 53890), (442, 45965), (493, 41210), (634, 32045), (754, 26945), (986, 20605), (1105, 18386), (1585, 12818), (1885, 10778), (2210, 9193), (2465, 8242), (3170, 6409), (3770, 5389), (4121, 4930)]