81986660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{585619}}^1$

素因数の和:585635

約数の個数: 24

約数和(自身を含む): 196768320

約数和(自身を除く): 114781660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 585619, 1171238, 2342476, 2928095, 4099333, 5856190, 8198666, 11712380, 16397332, 20496665, 40993330, 81986660]

約数ペア:

[(1, 81986660), (2, 40993330), (4, 20496665), (5, 16397332), (7, 11712380), (10, 8198666), (14, 5856190), (20, 4099333), (28, 2928095), (35, 2342476), (70, 1171238), (140, 585619)]