20066020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1087}}^1$

素因数の和:1180

約数の個数: 48

約数和(自身を含む): 46061568

約数和(自身を除く): 25995548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1087, 1420, 1846, 2174, 3692, 4348, 4615, 5435, 9230, 10870, 14131, 18460, 21740, 28262, 56524, 70655, 77177, 141310, 154354, 282620, 308708, 385885, 771770, 1003301, 1543540, 2006602, 4013204, 5016505, 10033010, 20066020]

約数ペア:

[(1, 20066020), (2, 10033010), (4, 5016505), (5, 4013204), (10, 2006602), (13, 1543540), (20, 1003301), (26, 771770), (52, 385885), (65, 308708), (71, 282620), (130, 154354), (142, 141310), (260, 77177), (284, 70655), (355, 56524), (710, 28262), (923, 21740), (1087, 18460), (1420, 14131), (1846, 10870), (2174, 9230), (3692, 5435), (4348, 4615)]