18170811

素因数分解:

$3^5\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 29213184

約数和(自身を除く): 11042373

約数列:

[1, 3, 9, 27, 37, 43, 47, 81, 111, 129, 141, 243, 333, 387, 423, 999, 1161, 1269, 1591, 1739, 2021, 2997, 3483, 3807, 4773, 5217, 6063, 8991, 10449, 11421, 14319, 15651, 18189, 42957, 46953, 54567, 74777, 128871, 140859, 163701, 224331, 386613, 422577, 491103, 672993, 2018979, 6056937, 18170811]

約数ペア:

[(1, 18170811), (3, 6056937), (9, 2018979), (27, 672993), (37, 491103), (43, 422577), (47, 386613), (81, 224331), (111, 163701), (129, 140859), (141, 128871), (243, 74777), (333, 54567), (387, 46953), (423, 42957), (999, 18189), (1161, 15651), (1269, 14319), (1591, 11421), (1739, 10449), (2021, 8991), (2997, 6063), (3483, 5217), (3807, 4773)]