20565799888

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{172787}}^1$

素因数の和:173011

約数の個数: 40

約数和(自身を含む): 41008812768

約数和(自身を除く): 20443012880

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 173, 344, 346, 688, 692, 1384, 2768, 7439, 14878, 29756, 59512, 119024, 172787, 345574, 691148, 1382296, 2764592, 7429841, 14859682, 29719364, 29892151, 59438728, 59784302, 118877456, 119568604, 239137208, 478274416, 1285362493, 2570724986, 5141449972, 10282899944, 20565799888]

約数ペア:

[(1, 20565799888), (2, 10282899944), (4, 5141449972), (8, 2570724986), (16, 1285362493), (43, 478274416), (86, 239137208), (172, 119568604), (173, 118877456), (344, 59784302), (346, 59438728), (688, 29892151), (692, 29719364), (1384, 14859682), (2768, 7429841), (7439, 2764592), (14878, 1382296), (29756, 691148), (59512, 345574), (119024, 172787)]