21291472

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{18229}}^1$

素因数の和:18310

約数の個数: 20

約数和(自身を含む): 41819620

約数和(自身を除く): 20528148

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 18229, 36458, 72916, 145832, 291664, 1330717, 2661434, 5322868, 10645736, 21291472]

約数ペア:

[(1, 21291472), (2, 10645736), (4, 5322868), (8, 2661434), (16, 1330717), (73, 291664), (146, 145832), (292, 72916), (584, 36458), (1168, 18229)]