21041188

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3463}}^1$

素因数の和:3512

約数の個数: 36

約数和(自身を含む): 44228352

約数和(自身を除く): 23187164

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 3463, 6076, 6926, 13852, 24241, 48482, 96964, 107353, 169687, 214706, 339374, 429412, 678748, 751471, 1502942, 3005884, 5260297, 10520594, 21041188]

約数ペア:

[(1, 21041188), (2, 10520594), (4, 5260297), (7, 3005884), (14, 1502942), (28, 751471), (31, 678748), (49, 429412), (62, 339374), (98, 214706), (124, 169687), (196, 107353), (217, 96964), (434, 48482), (868, 24241), (1519, 13852), (3038, 6926), (3463, 6076)]