21810945

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3023}}^1$

素因数の和:3081

約数の個数: 32

約数和(自身を含む): 38610432

約数和(自身を除く): 16799487

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 3023, 7215, 9069, 15115, 39299, 45345, 111851, 117897, 196495, 335553, 559255, 589485, 1454063, 1677765, 4362189, 7270315, 21810945]

約数ペア:

[(1, 21810945), (3, 7270315), (5, 4362189), (13, 1677765), (15, 1454063), (37, 589485), (39, 559255), (65, 335553), (111, 196495), (185, 117897), (195, 111851), (481, 45345), (555, 39299), (1443, 15115), (2405, 9069), (3023, 7215)]