79899580

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{4007}}^1$

素因数の和:5013

約数の個数: 24

約数和(自身を含む): 167999328

約数和(自身を除く): 88099748

約数列:

[1, 2, 4, 5, 10, 20, 997, 1994, 3988, 4007, 4985, 8014, 9970, 16028, 19940, 20035, 40070, 80140, 3994979, 7989958, 15979916, 19974895, 39949790, 79899580]

約数ペア:

[(1, 79899580), (2, 39949790), (4, 19974895), (5, 15979916), (10, 7989958), (20, 3994979), (997, 80140), (1994, 40070), (3988, 20035), (4007, 19940), (4985, 16028), (8014, 9970)]