21483225

素因数分解:

$3^4\times 5^2\times {\mathrm{103}}^2$

素因数の和:228

約数の個数: 45

約数和(自身を含む): 40184463

約数和(自身を除く): 18701238

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 103, 135, 225, 309, 405, 515, 675, 927, 1545, 2025, 2575, 2781, 4635, 7725, 8343, 10609, 13905, 23175, 31827, 41715, 53045, 69525, 95481, 159135, 208575, 265225, 286443, 477405, 795675, 859329, 1432215, 2387025, 4296645, 7161075, 21483225]

約数ペア:

[(1, 21483225), (3, 7161075), (5, 4296645), (9, 2387025), (15, 1432215), (25, 859329), (27, 795675), (45, 477405), (75, 286443), (81, 265225), (103, 208575), (135, 159135), (225, 95481), (309, 69525), (405, 53045), (515, 41715), (675, 31827), (927, 23175), (1545, 13905), (2025, 10609), (2575, 8343), (2781, 7725)]