21871256

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{248537}}^1$

素因数の和:248554

約数の個数: 16

約数和(自身を含む): 44736840

約数和(自身を除く): 22865584

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 248537, 497074, 994148, 1988296, 2733907, 5467814, 10935628, 21871256]

約数ペア:

[(1, 21871256), (2, 10935628), (4, 5467814), (8, 2733907), (11, 1988296), (22, 994148), (44, 497074), (88, 248537)]