17820275

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:212

約数の個数: 36

約数和(自身を含む): 25034856

約数和(自身を除く): 7214581

約数列:

[1, 5, 11, 25, 43, 55, 121, 137, 215, 275, 473, 605, 685, 1075, 1507, 2365, 3025, 3425, 5203, 5891, 7535, 11825, 16577, 26015, 29455, 37675, 64801, 82885, 130075, 147275, 324005, 414425, 712811, 1620025, 3564055, 17820275]

約数ペア:

[(1, 17820275), (5, 3564055), (11, 1620025), (25, 712811), (43, 414425), (55, 324005), (121, 147275), (137, 130075), (215, 82885), (275, 64801), (473, 37675), (605, 29455), (685, 26015), (1075, 16577), (1507, 11825), (2365, 7535), (3025, 5891), (3425, 5203)]