18991036

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2693}}^1$

素因数の和:2781

約数の個数: 24

約数和(自身を含む): 34849584

約数和(自身を除く): 15858548

約数列:

[1, 2, 4, 41, 43, 82, 86, 164, 172, 1763, 2693, 3526, 5386, 7052, 10772, 110413, 115799, 220826, 231598, 441652, 463196, 4747759, 9495518, 18991036]

約数ペア:

[(1, 18991036), (2, 9495518), (4, 4747759), (41, 463196), (43, 441652), (82, 231598), (86, 220826), (164, 115799), (172, 110413), (1763, 10772), (2693, 7052), (3526, 5386)]