31137320

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{2503}}^1$

素因数の和:2825

約数の個数: 32

約数和(自身を含む): 70312320

約数和(自身を除く): 39175000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 2503, 3110, 5006, 6220, 10012, 12440, 12515, 20024, 25030, 50060, 100120, 778433, 1556866, 3113732, 3892165, 6227464, 7784330, 15568660, 31137320]

約数ペア:

[(1, 31137320), (2, 15568660), (4, 7784330), (5, 6227464), (8, 3892165), (10, 3113732), (20, 1556866), (40, 778433), (311, 100120), (622, 50060), (1244, 25030), (1555, 20024), (2488, 12515), (2503, 12440), (3110, 10012), (5006, 6220)]