39979700

素因数分解:

$2^2\times 5^2\times {\mathrm{401}}^1\times {\mathrm{997}}^1$

素因数の和:1412

約数の個数: 36

約数和(自身を含む): 87059532

約数和(自身を除く): 47079832

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 401, 802, 997, 1604, 1994, 2005, 3988, 4010, 4985, 8020, 9970, 10025, 19940, 20050, 24925, 40100, 49850, 99700, 399797, 799594, 1599188, 1998985, 3997970, 7995940, 9994925, 19989850, 39979700]

約数ペア:

[(1, 39979700), (2, 19989850), (4, 9994925), (5, 7995940), (10, 3997970), (20, 1998985), (25, 1599188), (50, 799594), (100, 399797), (401, 99700), (802, 49850), (997, 40100), (1604, 24925), (1994, 20050), (2005, 19940), (3988, 10025), (4010, 9970), (4985, 8020)]