21309717

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{3821}}^1$

素因数の和:3861

約数の個数: 24

約数和(自身を含む): 33572448

約数和(自身を除く): 12262731

約数列:

[1, 3, 11, 13, 33, 39, 143, 169, 429, 507, 1859, 3821, 5577, 11463, 42031, 49673, 126093, 149019, 546403, 645749, 1639209, 1937247, 7103239, 21309717]

約数ペア:

[(1, 21309717), (3, 7103239), (11, 1937247), (13, 1639209), (33, 645749), (39, 546403), (143, 149019), (169, 126093), (429, 49673), (507, 42031), (1859, 11463), (3821, 5577)]