2157885

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{607}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 3793920

約数和(自身を除く): 1636035

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 607, 711, 1185, 1821, 3035, 3555, 5463, 9105, 27315, 47953, 143859, 239765, 431577, 719295, 2157885]

約数ペア:

[(1, 2157885), (3, 719295), (5, 431577), (9, 239765), (15, 143859), (45, 47953), (79, 27315), (237, 9105), (395, 5463), (607, 3555), (711, 3035), (1185, 1821)]