21000228221

素因数分解:

$7^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1\times {\mathrm{90289}}^1$

素因数の和:90668

約数の個数: 16

約数和(自身を含む): 24269952000

約数和(自身を除く): 3269723779

約数列:

[1, 7, 149, 223, 1043, 1561, 33227, 90289, 232589, 632023, 13453061, 20134447, 94171427, 140941129, 3000032603, 21000228221]

約数ペア:

[(1, 21000228221), (7, 3000032603), (149, 140941129), (223, 94171427), (1043, 20134447), (1561, 13453061), (33227, 632023), (90289, 232589)]