21229988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{3613}}^1$

素因数の和:3743

約数の個数: 24

約数和(自身を含む): 40375608

約数和(自身を除く): 19145620

約数列:

[1, 2, 4, 13, 26, 52, 113, 226, 452, 1469, 2938, 3613, 5876, 7226, 14452, 46969, 93938, 187876, 408269, 816538, 1633076, 5307497, 10614994, 21229988]

約数ペア:

[(1, 21229988), (2, 10614994), (4, 5307497), (13, 1633076), (26, 816538), (52, 408269), (113, 187876), (226, 93938), (452, 46969), (1469, 14452), (2938, 7226), (3613, 5876)]