20986628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 41846784

約数和(自身を除く): 20860156

約数列:

[1, 2, 4, 13, 26, 31, 47, 52, 62, 94, 124, 188, 277, 403, 554, 611, 806, 1108, 1222, 1457, 1612, 2444, 2914, 3601, 5828, 7202, 8587, 13019, 14404, 17174, 18941, 26038, 34348, 37882, 52076, 75764, 111631, 169247, 223262, 338494, 403589, 446524, 676988, 807178, 1614356, 5246657, 10493314, 20986628]

約数ペア:

[(1, 20986628), (2, 10493314), (4, 5246657), (13, 1614356), (26, 807178), (31, 676988), (47, 446524), (52, 403589), (62, 338494), (94, 223262), (124, 169247), (188, 111631), (277, 75764), (403, 52076), (554, 37882), (611, 34348), (806, 26038), (1108, 18941), (1222, 17174), (1457, 14404), (1612, 13019), (2444, 8587), (2914, 7202), (3601, 5828)]