40800020

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{16063}}^1$

素因数の和:16199

約数の個数: 24

約数和(自身を含む): 86360064

約数和(自身を除く): 45560044

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 16063, 32126, 64252, 80315, 160630, 321260, 2040001, 4080002, 8160004, 10200005, 20400010, 40800020]

約数ペア:

[(1, 40800020), (2, 20400010), (4, 10200005), (5, 8160004), (10, 4080002), (20, 2040001), (127, 321260), (254, 160630), (508, 80315), (635, 64252), (1270, 32126), (2540, 16063)]