21314620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17471}}^1$

素因数の和:17541

約数の個数: 24

約数和(自身を含む): 45497088

約数和(自身を除く): 24182468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17471, 34942, 69884, 87355, 174710, 349420, 1065731, 2131462, 4262924, 5328655, 10657310, 21314620]

約数ペア:

[(1, 21314620), (2, 10657310), (4, 5328655), (5, 4262924), (10, 2131462), (20, 1065731), (61, 349420), (122, 174710), (244, 87355), (305, 69884), (610, 34942), (1220, 17471)]