71570420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87281}}^1$

素因数の和:87331

約数の個数: 24

約数和(自身を含む): 153965448

約数和(自身を除く): 82395028

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87281, 174562, 349124, 436405, 872810, 1745620, 3578521, 7157042, 14314084, 17892605, 35785210, 71570420]

約数ペア:

[(1, 71570420), (2, 35785210), (4, 17892605), (5, 14314084), (10, 7157042), (20, 3578521), (41, 1745620), (82, 872810), (164, 436405), (205, 349124), (410, 174562), (820, 87281)]