21249675

素因数分解:

$3^3\times 5^2\times {\mathrm{31481}}^1$

素因数の和:31500

約数の個数: 24

約数和(自身を含む): 39037680

約数和(自身を除く): 17788005

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31481, 94443, 157405, 283329, 472215, 787025, 849987, 1416645, 2361075, 4249935, 7083225, 21249675]

約数ペア:

[(1, 21249675), (3, 7083225), (5, 4249935), (9, 2361075), (15, 1416645), (25, 849987), (27, 787025), (45, 472215), (75, 283329), (135, 157405), (225, 94443), (675, 31481)]