20438355

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3191}}^1$

素因数の和:3267

約数の個数: 32

約数和(自身を含む): 37997568

約数和(自身を除く): 17559213

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3191, 6405, 9573, 15955, 22337, 47865, 67011, 111685, 194651, 335055, 583953, 973255, 1362557, 2919765, 4087671, 6812785, 20438355]

約数ペア:

[(1, 20438355), (3, 6812785), (5, 4087671), (7, 2919765), (15, 1362557), (21, 973255), (35, 583953), (61, 335055), (105, 194651), (183, 111685), (305, 67011), (427, 47865), (915, 22337), (1281, 15955), (2135, 9573), (3191, 6405)]