18734913

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{443}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 28075008

約数和(自身を除く): 9340095

約数列:

[1, 3, 9, 37, 111, 127, 333, 381, 443, 1143, 1329, 3987, 4699, 14097, 16391, 42291, 49173, 56261, 147519, 168783, 506349, 2081657, 6244971, 18734913]

約数ペア:

[(1, 18734913), (3, 6244971), (9, 2081657), (37, 506349), (111, 168783), (127, 147519), (333, 56261), (381, 49173), (443, 42291), (1143, 16391), (1329, 14097), (3987, 4699)]