20842910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2129}}^1$

素因数の和:2236

約数の個数: 32

約数和(自身を含む): 41407200

約数和(自身を除く): 20564290

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2129, 4258, 4895, 9790, 10645, 21290, 23419, 46838, 117095, 189481, 234190, 378962, 947405, 1894810, 2084291, 4168582, 10421455, 20842910]

約数ペア:

[(1, 20842910), (2, 10421455), (5, 4168582), (10, 2084291), (11, 1894810), (22, 947405), (55, 378962), (89, 234190), (110, 189481), (178, 117095), (445, 46838), (890, 23419), (979, 21290), (1958, 10645), (2129, 9790), (4258, 4895)]