399483820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{539843}}^1$

素因数の和:539889

約数の個数: 24

約数和(自身を含む): 861591024

約数和(自身を除く): 462107204

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 539843, 1079686, 2159372, 2699215, 5398430, 10796860, 19974191, 39948382, 79896764, 99870955, 199741910, 399483820]

約数ペア:

[(1, 399483820), (2, 199741910), (4, 99870955), (5, 79896764), (10, 39948382), (20, 19974191), (37, 10796860), (74, 5398430), (148, 2699215), (185, 2159372), (370, 1079686), (740, 539843)]