28977984020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20407031}}^1$

素因数の和:20407111

約数の個数: 24

約数和(自身を含む): 61710864768

約数和(自身を除く): 32732880748

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20407031, 40814062, 81628124, 102035155, 204070310, 408140620, 1448899201, 2897798402, 5795596804, 7244496005, 14488992010, 28977984020]

約数ペア:

[(1, 28977984020), (2, 14488992010), (4, 7244496005), (5, 5795596804), (10, 2897798402), (20, 1448899201), (71, 408140620), (142, 204070310), (284, 102035155), (355, 81628124), (710, 40814062), (1420, 20407031)]