71213320

素因数分解:

$2^3\times 5^1\times {\mathrm{1780333}}^1$

素因数の和:1780344

約数の個数: 16

約数和(自身を含む): 160230060

約数和(自身を除く): 89016740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1780333, 3560666, 7121332, 8901665, 14242664, 17803330, 35606660, 71213320]

約数ペア:

[(1, 71213320), (2, 35606660), (4, 17803330), (5, 14242664), (8, 8901665), (10, 7121332), (20, 3560666), (40, 1780333)]