3997900

素因数分解:

$2^2\times 5^2\times {\mathrm{39979}}^1$

素因数の和:39993

約数の個数: 18

約数和(自身を含む): 8675660

約数和(自身を除く): 4677760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 39979, 79958, 159916, 199895, 399790, 799580, 999475, 1998950, 3997900]

約数ペア:

[(1, 3997900), (2, 1998950), (4, 999475), (5, 799580), (10, 399790), (20, 199895), (25, 159916), (50, 79958), (100, 39979)]