21150556

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^2$

素因数の和:167

約数の個数: 54

約数和(自身を含む): 45211488

約数和(自身を除く): 24060932

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 59, 62, 98, 118, 124, 196, 217, 236, 413, 434, 826, 868, 1519, 1652, 1829, 2891, 3038, 3481, 3658, 5782, 6076, 6962, 7316, 11564, 12803, 13924, 24367, 25606, 48734, 51212, 89621, 97468, 107911, 170569, 179242, 215822, 341138, 358484, 431644, 682276, 755377, 1510754, 3021508, 5287639, 10575278, 21150556]

約数ペア:

[(1, 21150556), (2, 10575278), (4, 5287639), (7, 3021508), (14, 1510754), (28, 755377), (31, 682276), (49, 431644), (59, 358484), (62, 341138), (98, 215822), (118, 179242), (124, 170569), (196, 107911), (217, 97468), (236, 89621), (413, 51212), (434, 48734), (826, 25606), (868, 24367), (1519, 13924), (1652, 12803), (1829, 11564), (2891, 7316), (3038, 6962), (3481, 6076), (3658, 5782)]