21670335

素因数分解:

$3^4\times 5^1\times {\mathrm{53507}}^1$

素因数の和:53524

約数の個数: 20

約数和(自身を含む): 38846808

約数和(自身を除く): 17176473

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53507, 160521, 267535, 481563, 802605, 1444689, 2407815, 4334067, 7223445, 21670335]

約数ペア:

[(1, 21670335), (3, 7223445), (5, 4334067), (9, 2407815), (15, 1444689), (27, 802605), (45, 481563), (81, 267535), (135, 160521), (405, 53507)]