21589815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2089}}^1$

素因数の和:2163

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 16331145

約数列:

[1, 3, 5, 13, 15, 39, 53, 65, 159, 195, 265, 689, 795, 2067, 2089, 3445, 6267, 10335, 10445, 27157, 31335, 81471, 110717, 135785, 332151, 407355, 553585, 1439321, 1660755, 4317963, 7196605, 21589815]

約数ペア:

[(1, 21589815), (3, 7196605), (5, 4317963), (13, 1660755), (15, 1439321), (39, 553585), (53, 407355), (65, 332151), (159, 135785), (195, 110717), (265, 81471), (689, 31335), (795, 27157), (2067, 10445), (2089, 10335), (3445, 6267)]