20217525

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6269}}^1$

素因数の和:6325

約数の個数: 24

約数和(自身を含む): 34209120

約数和(自身を除く): 13991595

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6269, 18807, 31345, 94035, 156725, 269567, 470175, 808701, 1347835, 4043505, 6739175, 20217525]

約数ペア:

[(1, 20217525), (3, 6739175), (5, 4043505), (15, 1347835), (25, 808701), (43, 470175), (75, 269567), (129, 156725), (215, 94035), (645, 31345), (1075, 18807), (3225, 6269)]