520065640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{82813}}^1$

素因数の和:82981

約数の個数: 32

約数和(自身を含む): 1177615080

約数和(自身を除く): 657549440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 82813, 165626, 331252, 414065, 662504, 828130, 1656260, 3312520, 13001641, 26003282, 52006564, 65008205, 104013128, 130016410, 260032820, 520065640]

約数ペア:

[(1, 520065640), (2, 260032820), (4, 130016410), (5, 104013128), (8, 65008205), (10, 52006564), (20, 26003282), (40, 13001641), (157, 3312520), (314, 1656260), (628, 828130), (785, 662504), (1256, 414065), (1570, 331252), (3140, 165626), (6280, 82813)]