21494360

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1213}}^1$

素因数の和:1667

約数の個数: 32

約数和(自身を含む): 48511440

約数和(自身を除く): 27017080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1213, 1772, 2215, 2426, 3544, 4430, 4852, 6065, 8860, 9704, 12130, 17720, 24260, 48520, 537359, 1074718, 2149436, 2686795, 4298872, 5373590, 10747180, 21494360]

約数ペア:

[(1, 21494360), (2, 10747180), (4, 5373590), (5, 4298872), (8, 2686795), (10, 2149436), (20, 1074718), (40, 537359), (443, 48520), (886, 24260), (1213, 17720), (1772, 12130), (2215, 9704), (2426, 8860), (3544, 6065), (4430, 4852)]