21287565

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36389}}^1$

素因数の和:36413

約数の個数: 24

約数和(自身を含む): 39737880

約数和(自身を除く): 18450315

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 36389, 109167, 181945, 327501, 473057, 545835, 1419171, 1637505, 2365285, 4257513, 7095855, 21287565]

約数ペア:

[(1, 21287565), (3, 7095855), (5, 4257513), (9, 2365285), (13, 1637505), (15, 1419171), (39, 545835), (45, 473057), (65, 327501), (117, 181945), (195, 109167), (585, 36389)]