21020550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{3259}}^1$

素因数の和:3317

約数の個数: 48

約数和(自身を含む): 53359680

約数和(自身を除く): 32339130

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 86, 129, 150, 215, 258, 430, 645, 1075, 1290, 2150, 3225, 3259, 6450, 6518, 9777, 16295, 19554, 32590, 48885, 81475, 97770, 140137, 162950, 244425, 280274, 420411, 488850, 700685, 840822, 1401370, 2102055, 3503425, 4204110, 7006850, 10510275, 21020550]

約数ペア:

[(1, 21020550), (2, 10510275), (3, 7006850), (5, 4204110), (6, 3503425), (10, 2102055), (15, 1401370), (25, 840822), (30, 700685), (43, 488850), (50, 420411), (75, 280274), (86, 244425), (129, 162950), (150, 140137), (215, 97770), (258, 81475), (430, 48885), (645, 32590), (1075, 19554), (1290, 16295), (2150, 9777), (3225, 6518), (3259, 6450)]