21742825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 29295000

約数和(自身を除く): 7552175

約数列:

[1, 5, 13, 25, 65, 149, 325, 449, 745, 1937, 2245, 3725, 5837, 9685, 11225, 29185, 48425, 66901, 145925, 334505, 869713, 1672525, 4348565, 21742825]

約数ペア:

[(1, 21742825), (5, 4348565), (13, 1672525), (25, 869713), (65, 334505), (149, 145925), (325, 66901), (449, 48425), (745, 29185), (1937, 11225), (2245, 9685), (3725, 5837)]