55180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:129

約数の個数: 24

約数和(自身を含む): 120960

約数和(自身を除く): 65780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 11036, 13795, 27590, 55180]

約数ペア:

[(1, 55180), (2, 27590), (4, 13795), (5, 11036), (10, 5518), (20, 2759), (31, 1780), (62, 890), (89, 620), (124, 445), (155, 356), (178, 310)]