20495098

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 35516880

約数和(自身を除く): 15021782

約数列:

[1, 2, 13, 17, 26, 34, 89, 178, 221, 442, 521, 1042, 1157, 1513, 2314, 3026, 6773, 8857, 13546, 17714, 19669, 39338, 46369, 92738, 115141, 230282, 602797, 788273, 1205594, 1576546, 10247549, 20495098]

約数ペア:

[(1, 20495098), (2, 10247549), (13, 1576546), (17, 1205594), (26, 788273), (34, 602797), (89, 230282), (178, 115141), (221, 92738), (442, 46369), (521, 39338), (1042, 19669), (1157, 17714), (1513, 13546), (2314, 8857), (3026, 6773)]