18919684

素因数分解:

$2^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1163}}^1$

素因数の和:1264

約数の個数: 36

約数和(自身を含む): 39012624

約数和(自身を除く): 20092940

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 196, 332, 581, 1162, 1163, 2324, 2326, 4067, 4652, 8134, 8141, 16268, 16282, 32564, 56987, 96529, 113974, 193058, 227948, 386116, 675703, 1351406, 2702812, 4729921, 9459842, 18919684]

約数ペア:

[(1, 18919684), (2, 9459842), (4, 4729921), (7, 2702812), (14, 1351406), (28, 675703), (49, 386116), (83, 227948), (98, 193058), (166, 113974), (196, 96529), (332, 56987), (581, 32564), (1162, 16282), (1163, 16268), (2324, 8141), (2326, 8134), (4067, 4652)]