71915980

素因数分解:

$2^2\times 5^1\times {\mathrm{1619}}^1\times {\mathrm{2221}}^1$

素因数の和:3849

約数の個数: 24

約数和(自身を含む): 151184880

約数和(自身を除く): 79268900

約数列:

[1, 2, 4, 5, 10, 20, 1619, 2221, 3238, 4442, 6476, 8095, 8884, 11105, 16190, 22210, 32380, 44420, 3595799, 7191598, 14383196, 17978995, 35957990, 71915980]

約数ペア:

[(1, 71915980), (2, 35957990), (4, 17978995), (5, 14383196), (10, 7191598), (20, 3595799), (1619, 44420), (2221, 32380), (3238, 22210), (4442, 16190), (6476, 11105), (8095, 8884)]