21635999

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 27751248

約数和(自身を除く): 6115249

約数列:

[1, 7, 11, 49, 77, 137, 293, 539, 959, 1507, 2051, 3223, 6713, 10549, 14357, 22561, 40141, 73843, 157927, 280987, 441551, 1966909, 3090857, 21635999]

約数ペア:

[(1, 21635999), (7, 3090857), (11, 1966909), (49, 441551), (77, 280987), (137, 157927), (293, 73843), (539, 40141), (959, 22561), (1507, 14357), (2051, 10549), (3223, 6713)]