28331875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1$

素因数の和:361

約数の個数: 40

約数和(自身を含む): 41724144

約数和(自身を除く): 13392269

約数列:

[1, 5, 11, 13, 25, 55, 65, 125, 143, 275, 317, 325, 625, 715, 1375, 1585, 1625, 3487, 3575, 4121, 6875, 7925, 8125, 17435, 17875, 20605, 39625, 45331, 87175, 89375, 103025, 198125, 226655, 435875, 515125, 1133275, 2179375, 2575625, 5666375, 28331875]

約数ペア:

[(1, 28331875), (5, 5666375), (11, 2575625), (13, 2179375), (25, 1133275), (55, 515125), (65, 435875), (125, 226655), (143, 198125), (275, 103025), (317, 89375), (325, 87175), (625, 45331), (715, 39625), (1375, 20605), (1585, 17875), (1625, 17435), (3487, 8125), (3575, 7925), (4121, 6875)]