18081520

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2861}}^1$

素因数の和:2953

約数の個数: 40

約数和(自身を含む): 42586560

約数和(自身を除く): 24505040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 2861, 3160, 5722, 6320, 11444, 14305, 22888, 28610, 45776, 57220, 114440, 226019, 228880, 452038, 904076, 1130095, 1808152, 2260190, 3616304, 4520380, 9040760, 18081520]

約数ペア:

[(1, 18081520), (2, 9040760), (4, 4520380), (5, 3616304), (8, 2260190), (10, 1808152), (16, 1130095), (20, 904076), (40, 452038), (79, 228880), (80, 226019), (158, 114440), (316, 57220), (395, 45776), (632, 28610), (790, 22888), (1264, 14305), (1580, 11444), (2861, 6320), (3160, 5722)]