2217990125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{1364917}}^1$

素因数の和:1364945

約数の個数: 16

約数和(自身を含む): 2980980912

約数和(自身を除く): 762990787

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 1364917, 6824585, 17743921, 34122925, 88719605, 170614625, 443598025, 2217990125]

約数ペア:

[(1, 2217990125), (5, 443598025), (13, 170614625), (25, 88719605), (65, 34122925), (125, 17743921), (325, 6824585), (1625, 1364917)]