645990191

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{2213}}^1$

素因数の和:2471

約数の個数: 32

約数和(自身を含む): 856977408

約数和(自身を除く): 210987217

約数列:

[1, 7, 11, 17, 77, 119, 187, 223, 1309, 1561, 2213, 2453, 3791, 15491, 17171, 24343, 26537, 37621, 41701, 170401, 263347, 291907, 413831, 493499, 2896817, 3454493, 5428489, 8389483, 37999423, 58726381, 92284313, 645990191]

約数ペア:

[(1, 645990191), (7, 92284313), (11, 58726381), (17, 37999423), (77, 8389483), (119, 5428489), (187, 3454493), (223, 2896817), (1309, 493499), (1561, 413831), (2213, 291907), (2453, 263347), (3791, 170401), (15491, 41701), (17171, 37621), (24343, 26537)]