28813040

素因数分解:

$2^4\times 5^1\times {\mathrm{360163}}^1$

素因数の和:360176

約数の個数: 20

約数和(自身を含む): 66990504

約数和(自身を除く): 38177464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 360163, 720326, 1440652, 1800815, 2881304, 3601630, 5762608, 7203260, 14406520, 28813040]

約数ペア:

[(1, 28813040), (2, 14406520), (4, 7203260), (5, 5762608), (8, 3601630), (10, 2881304), (16, 1800815), (20, 1440652), (40, 720326), (80, 360163)]