20181273231

素因数分解:

$3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{643}}^1\times {\mathrm{2399}}^1$

素因数の和:3148

約数の個数: 48

約数和(自身を含む): 31715712000

約数和(自身を除く): 11534438769

約数列:

[1, 3, 7, 21, 49, 89, 147, 267, 623, 643, 1869, 1929, 2399, 4361, 4501, 7197, 13083, 13503, 16793, 31507, 50379, 57227, 94521, 117551, 171681, 213511, 352653, 400589, 640533, 1201767, 1494577, 1542557, 2804123, 4483731, 4627671, 8412369, 10462039, 10797899, 31386117, 32393697, 75585293, 137287573, 226755879, 411862719, 961013011, 2883039033, 6727091077, 20181273231]

約数ペア:

[(1, 20181273231), (3, 6727091077), (7, 2883039033), (21, 961013011), (49, 411862719), (89, 226755879), (147, 137287573), (267, 75585293), (623, 32393697), (643, 31386117), (1869, 10797899), (1929, 10462039), (2399, 8412369), (4361, 4627671), (4501, 4483731), (7197, 2804123), (13083, 1542557), (13503, 1494577), (16793, 1201767), (31507, 640533), (50379, 400589), (57227, 352653), (94521, 213511), (117551, 171681)]