20167731

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 31680000

約数和(自身を除く): 11512269

約数列:

[1, 3, 9, 27, 29, 43, 87, 129, 261, 387, 599, 783, 1161, 1247, 1797, 3741, 5391, 11223, 16173, 17371, 25757, 33669, 52113, 77271, 156339, 231813, 469017, 695439, 746953, 2240859, 6722577, 20167731]

約数ペア:

[(1, 20167731), (3, 6722577), (9, 2240859), (27, 746953), (29, 695439), (43, 469017), (87, 231813), (129, 156339), (261, 77271), (387, 52113), (599, 33669), (783, 25757), (1161, 17371), (1247, 16173), (1797, 11223), (3741, 5391)]