155128520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{90191}}^1$

素因数の和:90245

約数の個数: 32

約数和(自身を含む): 357160320

約数和(自身を除く): 202031800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 90191, 180382, 360764, 450955, 721528, 901910, 1803820, 3607640, 3878213, 7756426, 15512852, 19391065, 31025704, 38782130, 77564260, 155128520]

約数ペア:

[(1, 155128520), (2, 77564260), (4, 38782130), (5, 31025704), (8, 19391065), (10, 15512852), (20, 7756426), (40, 3878213), (43, 3607640), (86, 1803820), (172, 901910), (215, 721528), (344, 450955), (430, 360764), (860, 180382), (1720, 90191)]