42578180

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{5309}}^1$

素因数の和:5719

約数の個数: 24

約数和(自身を含む): 89654040

約数和(自身を除く): 47075860

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 5309, 8020, 10618, 21236, 26545, 53090, 106180, 2128909, 4257818, 8515636, 10644545, 21289090, 42578180]

約数ペア:

[(1, 42578180), (2, 21289090), (4, 10644545), (5, 8515636), (10, 4257818), (20, 2128909), (401, 106180), (802, 53090), (1604, 26545), (2005, 21236), (4010, 10618), (5309, 8020)]