21276801

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{313}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 38403456

約数和(自身を除く): 17126655

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 83, 91, 117, 249, 273, 313, 581, 747, 819, 939, 1079, 1743, 2191, 2817, 3237, 4069, 5229, 6573, 7553, 9711, 12207, 19719, 22659, 25979, 28483, 36621, 67977, 77937, 85449, 181853, 233811, 256347, 337727, 545559, 1013181, 1636677, 2364089, 3039543, 7092267, 21276801]

約数ペア:

[(1, 21276801), (3, 7092267), (7, 3039543), (9, 2364089), (13, 1636677), (21, 1013181), (39, 545559), (63, 337727), (83, 256347), (91, 233811), (117, 181853), (249, 85449), (273, 77937), (313, 67977), (581, 36621), (747, 28483), (819, 25979), (939, 22659), (1079, 19719), (1743, 12207), (2191, 9711), (2817, 7553), (3237, 6573), (4069, 5229)]