15992800

素因数分解:

$2^5\times 5^2\times {\mathrm{19991}}^1$

素因数の和:20011

約数の個数: 36

約数和(自身を含む): 39044376

約数和(自身を除く): 23051576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 19991, 39982, 79964, 99955, 159928, 199910, 319856, 399820, 499775, 639712, 799640, 999550, 1599280, 1999100, 3198560, 3998200, 7996400, 15992800]

約数ペア:

[(1, 15992800), (2, 7996400), (4, 3998200), (5, 3198560), (8, 1999100), (10, 1599280), (16, 999550), (20, 799640), (25, 639712), (32, 499775), (40, 399820), (50, 319856), (80, 199910), (100, 159928), (160, 99955), (200, 79964), (400, 39982), (800, 19991)]