20647744

素因数分解:

$2^6\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:144

約数の個数: 84

約数和(自身を含む): 46853856

約数和(自身を除く): 26206112

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 46, 52, 64, 83, 92, 104, 166, 169, 184, 208, 299, 332, 338, 368, 416, 598, 664, 676, 736, 832, 1079, 1196, 1328, 1352, 1472, 1909, 2158, 2392, 2656, 2704, 3818, 3887, 4316, 4784, 5312, 5408, 7636, 7774, 8632, 9568, 10816, 14027, 15272, 15548, 17264, 19136, 24817, 28054, 30544, 31096, 34528, 49634, 56108, 61088, 62192, 69056, 99268, 112216, 122176, 124384, 198536, 224432, 248768, 322621, 397072, 448864, 645242, 794144, 897728, 1290484, 1588288, 2580968, 5161936, 10323872, 20647744]

約数ペア:

[(1, 20647744), (2, 10323872), (4, 5161936), (8, 2580968), (13, 1588288), (16, 1290484), (23, 897728), (26, 794144), (32, 645242), (46, 448864), (52, 397072), (64, 322621), (83, 248768), (92, 224432), (104, 198536), (166, 124384), (169, 122176), (184, 112216), (208, 99268), (299, 69056), (332, 62192), (338, 61088), (368, 56108), (416, 49634), (598, 34528), (664, 31096), (676, 30544), (736, 28054), (832, 24817), (1079, 19136), (1196, 17264), (1328, 15548), (1352, 15272), (1472, 14027), (1909, 10816), (2158, 9568), (2392, 8632), (2656, 7774), (2704, 7636), (3818, 5408), (3887, 5312), (4316, 4784)]