21435020

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7823}}^1$

素因数の和:7969

約数の個数: 24

約数和(自身を含む): 45347904

約数和(自身を除く): 23912884

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7823, 15646, 31292, 39115, 78230, 156460, 1071751, 2143502, 4287004, 5358755, 10717510, 21435020]

約数ペア:

[(1, 21435020), (2, 10717510), (4, 5358755), (5, 4287004), (10, 2143502), (20, 1071751), (137, 156460), (274, 78230), (548, 39115), (685, 31292), (1370, 15646), (2740, 7823)]