77648540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{90289}}^1$

素因数の和:90341

約数の個数: 24

約数和(自身を含む): 166855920

約数和(自身を除く): 89207380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 90289, 180578, 361156, 451445, 902890, 1805780, 3882427, 7764854, 15529708, 19412135, 38824270, 77648540]

約数ペア:

[(1, 77648540), (2, 38824270), (4, 19412135), (5, 15529708), (10, 7764854), (20, 3882427), (43, 1805780), (86, 902890), (172, 451445), (215, 361156), (430, 180578), (860, 90289)]