7968125

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:111

約数の個数: 40

約数和(自身を含む): 11621280

約数和(自身を除く): 3653155

約数列:

[1, 5, 11, 19, 25, 55, 61, 95, 125, 209, 275, 305, 475, 625, 671, 1045, 1159, 1375, 1525, 2375, 3355, 5225, 5795, 6875, 7625, 11875, 12749, 16775, 26125, 28975, 38125, 63745, 83875, 130625, 144875, 318725, 419375, 724375, 1593625, 7968125]

約数ペア:

[(1, 7968125), (5, 1593625), (11, 724375), (19, 419375), (25, 318725), (55, 144875), (61, 130625), (95, 83875), (125, 63745), (209, 38125), (275, 28975), (305, 26125), (475, 16775), (625, 12749), (671, 11875), (1045, 7625), (1159, 6875), (1375, 5795), (1525, 5225), (2375, 3355)]