28405475

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8543}}^1$

素因数の和:8579

約数の個数: 24

約数和(自身を含む): 42378240

約数和(自身を除く): 13972765

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 8543, 42715, 59801, 162317, 213575, 299005, 811585, 1136219, 1495025, 4057925, 5681095, 28405475]

約数ペア:

[(1, 28405475), (5, 5681095), (7, 4057925), (19, 1495025), (25, 1136219), (35, 811585), (95, 299005), (133, 213575), (175, 162317), (475, 59801), (665, 42715), (3325, 8543)]