20069920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9649}}^1$

素因数の和:9677

約数の個数: 48

約数和(自身を含む): 51067800

約数和(自身を除く): 30997880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9649, 19298, 38596, 48245, 77192, 96490, 125437, 154384, 192980, 250874, 308768, 385960, 501748, 627185, 771920, 1003496, 1254370, 1543840, 2006992, 2508740, 4013984, 5017480, 10034960, 20069920]

約数ペア:

[(1, 20069920), (2, 10034960), (4, 5017480), (5, 4013984), (8, 2508740), (10, 2006992), (13, 1543840), (16, 1254370), (20, 1003496), (26, 771920), (32, 627185), (40, 501748), (52, 385960), (65, 308768), (80, 250874), (104, 192980), (130, 154384), (160, 125437), (208, 96490), (260, 77192), (416, 48245), (520, 38596), (1040, 19298), (2080, 9649)]