391569320

素因数分解:

$2^3\times 5^1\times {\mathrm{2503}}^1\times {\mathrm{3911}}^1$

素因数の和:6425

約数の個数: 32

約数和(自身を含む): 881608320

約数和(自身を除く): 490039000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2503, 3911, 5006, 7822, 10012, 12515, 15644, 19555, 20024, 25030, 31288, 39110, 50060, 78220, 100120, 156440, 9789233, 19578466, 39156932, 48946165, 78313864, 97892330, 195784660, 391569320]

約数ペア:

[(1, 391569320), (2, 195784660), (4, 97892330), (5, 78313864), (8, 48946165), (10, 39156932), (20, 19578466), (40, 9789233), (2503, 156440), (3911, 100120), (5006, 78220), (7822, 50060), (10012, 39110), (12515, 31288), (15644, 25030), (19555, 20024)]