21344391

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:127

約数の個数: 56

約数和(自身を含む): 35675520

約数和(自身を除く): 14331129

約数列:

[1, 3, 9, 19, 23, 27, 57, 67, 69, 81, 171, 201, 207, 243, 437, 513, 603, 621, 729, 1273, 1311, 1539, 1541, 1809, 1863, 3819, 3933, 4617, 4623, 5427, 5589, 11457, 11799, 13851, 13869, 16281, 16767, 29279, 34371, 35397, 41607, 48843, 87837, 103113, 106191, 124821, 263511, 309339, 318573, 374463, 790533, 928017, 1123389, 2371599, 7114797, 21344391]

約数ペア:

[(1, 21344391), (3, 7114797), (9, 2371599), (19, 1123389), (23, 928017), (27, 790533), (57, 374463), (67, 318573), (69, 309339), (81, 263511), (171, 124821), (201, 106191), (207, 103113), (243, 87837), (437, 48843), (513, 41607), (603, 35397), (621, 34371), (729, 29279), (1273, 16767), (1311, 16281), (1539, 13869), (1541, 13851), (1809, 11799), (1863, 11457), (3819, 5589), (3933, 5427), (4617, 4623)]