21089475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8521}}^1$

素因数の和:8548

約数の個数: 36

約数和(自身を含む): 41212392

約数和(自身を除く): 20122917

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8521, 25563, 42605, 76689, 93731, 127815, 213025, 281193, 383445, 468655, 639075, 843579, 1405965, 1917225, 2343275, 4217895, 7029825, 21089475]

約数ペア:

[(1, 21089475), (3, 7029825), (5, 4217895), (9, 2343275), (11, 1917225), (15, 1405965), (25, 843579), (33, 639075), (45, 468655), (55, 383445), (75, 281193), (99, 213025), (165, 127815), (225, 93731), (275, 76689), (495, 42605), (825, 25563), (2475, 8521)]