28204220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128201}}^1$

素因数の和:128221

約数の個数: 24

約数和(自身を含む): 64613808

約数和(自身を除く): 36409588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128201, 256402, 512804, 641005, 1282010, 1410211, 2564020, 2820422, 5640844, 7051055, 14102110, 28204220]

約数ペア:

[(1, 28204220), (2, 14102110), (4, 7051055), (5, 5640844), (10, 2820422), (11, 2564020), (20, 1410211), (22, 1282010), (44, 641005), (55, 512804), (110, 256402), (220, 128201)]