81930875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:552

約数の個数: 32

約数和(自身を含む): 111261696

約数和(自身を除く): 29330821

約数列:

[1, 5, 13, 25, 65, 125, 127, 325, 397, 635, 1625, 1651, 1985, 3175, 5161, 8255, 9925, 15875, 25805, 41275, 49625, 50419, 129025, 206375, 252095, 645125, 655447, 1260475, 3277235, 6302375, 16386175, 81930875]

約数ペア:

[(1, 81930875), (5, 16386175), (13, 6302375), (25, 3277235), (65, 1260475), (125, 655447), (127, 645125), (325, 252095), (397, 206375), (635, 129025), (1625, 50419), (1651, 49625), (1985, 41275), (3175, 25805), (5161, 15875), (8255, 9925)]