155980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{709}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 357840

約数和(自身を除く): 201860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 709, 1418, 2836, 3545, 7090, 7799, 14180, 15598, 31196, 38995, 77990, 155980]

約数ペア:

[(1, 155980), (2, 77990), (4, 38995), (5, 31196), (10, 15598), (11, 14180), (20, 7799), (22, 7090), (44, 3545), (55, 2836), (110, 1418), (220, 709)]