21332565

素因数分解:

$3^4\times 5^1\times {\mathrm{52673}}^1$

素因数の和:52690

約数の個数: 20

約数和(自身を含む): 38241324

約数和(自身を除く): 16908759

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52673, 158019, 263365, 474057, 790095, 1422171, 2370285, 4266513, 7110855, 21332565]

約数ペア:

[(1, 21332565), (3, 7110855), (5, 4266513), (9, 2370285), (15, 1422171), (27, 790095), (45, 474057), (81, 263365), (135, 158019), (405, 52673)]