20528710

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 38364192

約数和(自身を除く): 17835482

約数列:

[1, 2, 5, 10, 37, 74, 113, 185, 226, 370, 491, 565, 982, 1130, 2455, 4181, 4910, 8362, 18167, 20905, 36334, 41810, 55483, 90835, 110966, 181670, 277415, 554830, 2052871, 4105742, 10264355, 20528710]

約数ペア:

[(1, 20528710), (2, 10264355), (5, 4105742), (10, 2052871), (37, 554830), (74, 277415), (113, 181670), (185, 110966), (226, 90835), (370, 55483), (491, 41810), (565, 36334), (982, 20905), (1130, 18167), (2455, 8362), (4181, 4910)]