21350427

素因数分解:

$3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{2381}}^1$

素因数の和:2459

約数の個数: 24

約数和(自身を含む): 33671952

約数和(自身を除く): 12321525

約数列:

[1, 3, 7, 21, 49, 61, 147, 183, 427, 1281, 2381, 2989, 7143, 8967, 16667, 50001, 116669, 145241, 350007, 435723, 1016687, 3050061, 7116809, 21350427]

約数ペア:

[(1, 21350427), (3, 7116809), (7, 3050061), (21, 1016687), (49, 435723), (61, 350007), (147, 145241), (183, 116669), (427, 50001), (1281, 16667), (2381, 8967), (2989, 7143)]