21161745

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42751}}^1$

素因数の和:42773

約数の個数: 24

約数和(自身を含む): 40015872

約数和(自身を除く): 18854127

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42751, 128253, 213755, 384759, 470261, 641265, 1410783, 1923795, 2351305, 4232349, 7053915, 21161745]

約数ペア:

[(1, 21161745), (3, 7053915), (5, 4232349), (9, 2351305), (11, 1923795), (15, 1410783), (33, 641265), (45, 470261), (55, 384759), (99, 213755), (165, 128253), (495, 42751)]