81242650

素因数分解:

$2^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{4177}}^1$

素因数の和:4578

約数の個数: 24

約数和(自身を含む): 151536060

約数和(自身を除く): 70293410

約数列:

[1, 2, 5, 10, 25, 50, 389, 778, 1945, 3890, 4177, 8354, 9725, 19450, 20885, 41770, 104425, 208850, 1624853, 3249706, 8124265, 16248530, 40621325, 81242650]

約数ペア:

[(1, 81242650), (2, 40621325), (5, 16248530), (10, 8124265), (25, 3249706), (50, 1624853), (389, 208850), (778, 104425), (1945, 41770), (3890, 20885), (4177, 19450), (8354, 9725)]