172720779

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{2843}}^1$

素因数の和:3127

約数の個数: 32

約数和(自身を含む): 288313344

約数和(自身を除く): 115592565

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 263, 789, 1841, 2843, 2893, 5523, 8529, 8679, 19901, 20251, 31273, 59703, 60753, 93819, 218911, 656733, 747709, 2243127, 5233963, 8224799, 15701889, 24674397, 57573593, 172720779]

約数ペア:

[(1, 172720779), (3, 57573593), (7, 24674397), (11, 15701889), (21, 8224799), (33, 5233963), (77, 2243127), (231, 747709), (263, 656733), (789, 218911), (1841, 93819), (2843, 60753), (2893, 59703), (5523, 31273), (8529, 20251), (8679, 19901)]