20178140

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{1423}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 42463680

約数和(自身を除く): 22285540

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 1423, 2836, 2846, 3545, 5692, 7090, 7115, 14180, 14230, 28460, 1008907, 2017814, 4035628, 5044535, 10089070, 20178140]

約数ペア:

[(1, 20178140), (2, 10089070), (4, 5044535), (5, 4035628), (10, 2017814), (20, 1008907), (709, 28460), (1418, 14230), (1423, 14180), (2836, 7115), (2846, 7090), (3545, 5692)]