21341475

素因数分解:

$3^6\times 5^2\times {\mathrm{1171}}^1$

素因数の和:1199

約数の個数: 42

約数和(自身を含む): 39710876

約数和(自身を除く): 18369401

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 729, 1171, 1215, 2025, 3513, 3645, 5855, 6075, 10539, 17565, 18225, 29275, 31617, 52695, 87825, 94851, 158085, 263475, 284553, 474255, 790425, 853659, 1422765, 2371275, 4268295, 7113825, 21341475]

約数ペア:

[(1, 21341475), (3, 7113825), (5, 4268295), (9, 2371275), (15, 1422765), (25, 853659), (27, 790425), (45, 474255), (75, 284553), (81, 263475), (135, 158085), (225, 94851), (243, 87825), (405, 52695), (675, 31617), (729, 29275), (1171, 18225), (1215, 17565), (2025, 10539), (3513, 6075), (3645, 5855)]