21060020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14831}}^1$

素因数の和:14911

約数の個数: 24

約数和(自身を含む): 44851968

約数和(自身を除く): 23791948

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14831, 29662, 59324, 74155, 148310, 296620, 1053001, 2106002, 4212004, 5265005, 10530010, 21060020]

約数ペア:

[(1, 21060020), (2, 10530010), (4, 5265005), (5, 4212004), (10, 2106002), (20, 1053001), (71, 296620), (142, 148310), (284, 74155), (355, 59324), (710, 29662), (1420, 14831)]