18223720

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^2$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 42097860

約数和(自身を除く): 23874140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 79, 146, 158, 292, 316, 365, 395, 584, 632, 730, 790, 1460, 1580, 2920, 3160, 5767, 6241, 11534, 12482, 23068, 24964, 28835, 31205, 46136, 49928, 57670, 62410, 115340, 124820, 230680, 249640, 455593, 911186, 1822372, 2277965, 3644744, 4555930, 9111860, 18223720]

約数ペア:

[(1, 18223720), (2, 9111860), (4, 4555930), (5, 3644744), (8, 2277965), (10, 1822372), (20, 911186), (40, 455593), (73, 249640), (79, 230680), (146, 124820), (158, 115340), (292, 62410), (316, 57670), (365, 49928), (395, 46136), (584, 31205), (632, 28835), (730, 24964), (790, 23068), (1460, 12482), (1580, 11534), (2920, 6241), (3160, 5767)]