1990025125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{1447291}}^1$

素因数の和:1447317

約数の個数: 16

約数和(自身を含む): 2709330624

約数和(自身を除く): 719305499

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 1447291, 7236455, 15920201, 36182275, 79601005, 180911375, 398005025, 1990025125]

約数ペア:

[(1, 1990025125), (5, 398005025), (11, 180911375), (25, 79601005), (55, 36182275), (125, 15920201), (275, 7236455), (1375, 1447291)]