21220684

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{1129}}^1$

素因数の和:1297

約数の個数: 24

約数和(自身を含む): 38474240

約数和(自身を除く): 17253556

約数列:

[1, 2, 4, 37, 74, 127, 148, 254, 508, 1129, 2258, 4516, 4699, 9398, 18796, 41773, 83546, 143383, 167092, 286766, 573532, 5305171, 10610342, 21220684]

約数ペア:

[(1, 21220684), (2, 10610342), (4, 5305171), (37, 573532), (74, 286766), (127, 167092), (148, 143383), (254, 83546), (508, 41773), (1129, 18796), (2258, 9398), (4516, 4699)]