4001560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1409}}^1$

素因数の和:1491

約数の個数: 32

約数和(自身を含む): 9136800

約数和(自身を除く): 5135240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1409, 1420, 2818, 2840, 5636, 7045, 11272, 14090, 28180, 56360, 100039, 200078, 400156, 500195, 800312, 1000390, 2000780, 4001560]

約数ペア:

[(1, 4001560), (2, 2000780), (4, 1000390), (5, 800312), (8, 500195), (10, 400156), (20, 200078), (40, 100039), (71, 56360), (142, 28180), (284, 14090), (355, 11272), (568, 7045), (710, 5636), (1409, 2840), (1420, 2818)]