289772720

素因数分解:

$2^4\times 5^1\times {\mathrm{3622159}}^1$

素因数の和:3622172

約数の個数: 20

約数和(自身を含む): 673721760

約数和(自身を除く): 383949040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3622159, 7244318, 14488636, 18110795, 28977272, 36221590, 57954544, 72443180, 144886360, 289772720]

約数ペア:

[(1, 289772720), (2, 144886360), (4, 72443180), (5, 57954544), (8, 36221590), (10, 28977272), (16, 18110795), (20, 14488636), (40, 7244318), (80, 3622159)]