858450125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{653}}^1\times {\mathrm{809}}^1$

素因数の和:1490

約数の個数: 32

約数和(自身を含む): 1156952160

約数和(自身を除く): 298502035

約数列:

[1, 5, 13, 25, 65, 125, 325, 653, 809, 1625, 3265, 4045, 8489, 10517, 16325, 20225, 42445, 52585, 81625, 101125, 212225, 262925, 528277, 1061125, 1314625, 2641385, 6867601, 13206925, 34338005, 66034625, 171690025, 858450125]

約数ペア:

[(1, 858450125), (5, 171690025), (13, 66034625), (25, 34338005), (65, 13206925), (125, 6867601), (325, 2641385), (653, 1314625), (809, 1061125), (1625, 528277), (3265, 262925), (4045, 212225), (8489, 101125), (10517, 81625), (16325, 52585), (20225, 42445)]