21259625

素因数分解:

$5^3\times {\mathrm{53}}^1\times {\mathrm{3209}}^1$

素因数の和:3277

約数の個数: 16

約数和(自身を含む): 27041040

約数和(自身を除く): 5781415

約数列:

[1, 5, 25, 53, 125, 265, 1325, 3209, 6625, 16045, 80225, 170077, 401125, 850385, 4251925, 21259625]

約数ペア:

[(1, 21259625), (5, 4251925), (25, 850385), (53, 401125), (125, 170077), (265, 80225), (1325, 16045), (3209, 6625)]