20124220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7681}}^1$

素因数の和:7821

約数の個数: 24

約数和(自身を含む): 42589008

約数和(自身を除く): 22464788

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7681, 15362, 30724, 38405, 76810, 153620, 1006211, 2012422, 4024844, 5031055, 10062110, 20124220]

約数ペア:

[(1, 20124220), (2, 10062110), (4, 5031055), (5, 4024844), (10, 2012422), (20, 1006211), (131, 153620), (262, 76810), (524, 38405), (655, 30724), (1310, 15362), (2620, 7681)]