21259020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{354317}}^1$

素因数の和:354329

約数の個数: 24

約数和(自身を含む): 59525424

約数和(自身を除く): 38266404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 354317, 708634, 1062951, 1417268, 1771585, 2125902, 3543170, 4251804, 5314755, 7086340, 10629510, 21259020]

約数ペア:

[(1, 21259020), (2, 10629510), (3, 7086340), (4, 5314755), (5, 4251804), (6, 3543170), (10, 2125902), (12, 1771585), (15, 1417268), (20, 1062951), (30, 708634), (60, 354317)]