21255927

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:236

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 17451273

約数列:

[1, 3, 7, 11, 19, 21, 29, 33, 57, 77, 87, 133, 167, 203, 209, 231, 319, 399, 501, 551, 609, 627, 957, 1169, 1463, 1653, 1837, 2233, 3173, 3507, 3857, 4389, 4843, 5511, 6061, 6699, 9519, 11571, 12859, 14529, 18183, 22211, 33901, 34903, 38577, 42427, 53273, 66633, 92017, 101703, 104709, 127281, 159819, 244321, 276051, 372911, 644119, 732963, 1012187, 1118733, 1932357, 3036561, 7085309, 21255927]

約数ペア:

[(1, 21255927), (3, 7085309), (7, 3036561), (11, 1932357), (19, 1118733), (21, 1012187), (29, 732963), (33, 644119), (57, 372911), (77, 276051), (87, 244321), (133, 159819), (167, 127281), (203, 104709), (209, 101703), (231, 92017), (319, 66633), (399, 53273), (501, 42427), (551, 38577), (609, 34903), (627, 33901), (957, 22211), (1169, 18183), (1463, 14529), (1653, 12859), (1837, 11571), (2233, 9519), (3173, 6699), (3507, 6061), (3857, 5511), (4389, 4843)]