78517420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{126641}}^1$

素因数の和:126681

約数の個数: 24

約数和(自身を含む): 170206848

約数和(自身を除く): 91689428

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 126641, 253282, 506564, 633205, 1266410, 2532820, 3925871, 7851742, 15703484, 19629355, 39258710, 78517420]

約数ペア:

[(1, 78517420), (2, 39258710), (4, 19629355), (5, 15703484), (10, 7851742), (20, 3925871), (31, 2532820), (62, 1266410), (124, 633205), (155, 506564), (310, 253282), (620, 126641)]