20968425

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2273}}^1$

素因数の和:2330

約数の個数: 36

約数和(自身を含む): 38489724

約数和(自身を除く): 17521299

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 2273, 3075, 6819, 9225, 11365, 20457, 34095, 56825, 93193, 102285, 170475, 279579, 465965, 511425, 838737, 1397895, 2329825, 4193685, 6989475, 20968425]

約数ペア:

[(1, 20968425), (3, 6989475), (5, 4193685), (9, 2329825), (15, 1397895), (25, 838737), (41, 511425), (45, 465965), (75, 279579), (123, 170475), (205, 102285), (225, 93193), (369, 56825), (615, 34095), (1025, 20457), (1845, 11365), (2273, 9225), (3075, 6819)]