1815012440

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{440537}}^1$

素因数の和:440651

約数の個数: 32

約数和(自身を含む): 4123435680

約数和(自身を除く): 2308423240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 440537, 881074, 1762148, 2202685, 3524296, 4405370, 8810740, 17621480, 45375311, 90750622, 181501244, 226876555, 363002488, 453753110, 907506220, 1815012440]

約数ペア:

[(1, 1815012440), (2, 907506220), (4, 453753110), (5, 363002488), (8, 226876555), (10, 181501244), (20, 90750622), (40, 45375311), (103, 17621480), (206, 8810740), (412, 4405370), (515, 3524296), (824, 2202685), (1030, 1762148), (2060, 881074), (4120, 440537)]