20171216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2621}}^1$

素因数の和:2679

約数の個数: 40

約数和(自身を含む): 43242024

約数和(自身を除く): 23070808

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2621, 3848, 5242, 7696, 10484, 20968, 34073, 41936, 68146, 96977, 136292, 193954, 272584, 387908, 545168, 775816, 1260701, 1551632, 2521402, 5042804, 10085608, 20171216]

約数ペア:

[(1, 20171216), (2, 10085608), (4, 5042804), (8, 2521402), (13, 1551632), (16, 1260701), (26, 775816), (37, 545168), (52, 387908), (74, 272584), (104, 193954), (148, 136292), (208, 96977), (296, 68146), (481, 41936), (592, 34073), (962, 20968), (1924, 10484), (2621, 7696), (3848, 5242)]