21959288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11113}}^1$

素因数の和:11151

約数の個数: 32

約数和(自身を含む): 46678800

約数和(自身を除く): 24719512

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 11113, 22226, 44452, 88904, 144469, 211147, 288938, 422294, 577876, 844588, 1155752, 1689176, 2744911, 5489822, 10979644, 21959288]

約数ペア:

[(1, 21959288), (2, 10979644), (4, 5489822), (8, 2744911), (13, 1689176), (19, 1155752), (26, 844588), (38, 577876), (52, 422294), (76, 288938), (104, 211147), (152, 144469), (247, 88904), (494, 44452), (988, 22226), (1976, 11113)]