21962680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^2$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 51016680

約数和(自身を除く): 29054000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 113, 172, 215, 226, 344, 430, 452, 565, 860, 904, 1130, 1720, 2260, 4520, 4859, 9718, 12769, 19436, 24295, 25538, 38872, 48590, 51076, 63845, 97180, 102152, 127690, 194360, 255380, 510760, 549067, 1098134, 2196268, 2745335, 4392536, 5490670, 10981340, 21962680]

約数ペア:

[(1, 21962680), (2, 10981340), (4, 5490670), (5, 4392536), (8, 2745335), (10, 2196268), (20, 1098134), (40, 549067), (43, 510760), (86, 255380), (113, 194360), (172, 127690), (215, 102152), (226, 97180), (344, 63845), (430, 51076), (452, 48590), (565, 38872), (860, 25538), (904, 24295), (1130, 19436), (1720, 12769), (2260, 9718), (4520, 4859)]