20121963561

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{54983}}^1$

素因数の和:55190

約数の個数: 48

約数和(自身を含む): 34332889344

約数和(自身を除く): 14210925783

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 157, 259, 333, 471, 777, 1099, 1413, 2331, 3297, 5809, 9891, 17427, 40663, 52281, 54983, 121989, 164949, 365967, 384881, 494847, 1154643, 2034371, 3463929, 6103113, 8632331, 14240597, 18309339, 25896993, 42721791, 60426317, 77690979, 128165373, 181278951, 319396247, 543836853, 958188741, 2235773729, 2874566223, 6707321187, 20121963561]

約数ペア:

[(1, 20121963561), (3, 6707321187), (7, 2874566223), (9, 2235773729), (21, 958188741), (37, 543836853), (63, 319396247), (111, 181278951), (157, 128165373), (259, 77690979), (333, 60426317), (471, 42721791), (777, 25896993), (1099, 18309339), (1413, 14240597), (2331, 8632331), (3297, 6103113), (5809, 3463929), (9891, 2034371), (17427, 1154643), (40663, 494847), (52281, 384881), (54983, 365967), (121989, 164949)]