21508775547

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{727}}^1\times {\mathrm{11839}}^1$

素因数の和:12600

約数の個数: 48

約数和(自身を含む): 35374510080

約数和(自身を除く): 13865734533

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 727, 833, 2181, 2499, 5089, 11839, 12359, 15267, 35517, 35623, 37077, 82873, 86513, 106869, 201263, 248619, 259539, 580111, 603789, 605591, 1408841, 1740333, 1816773, 4226523, 8606953, 9861887, 25820859, 29585661, 60248671, 146318201, 180746013, 421740697, 438954603, 1024227407, 1265222091, 3072682221, 7169591849, 21508775547]

約数ペア:

[(1, 21508775547), (3, 7169591849), (7, 3072682221), (17, 1265222091), (21, 1024227407), (49, 438954603), (51, 421740697), (119, 180746013), (147, 146318201), (357, 60248671), (727, 29585661), (833, 25820859), (2181, 9861887), (2499, 8606953), (5089, 4226523), (11839, 1816773), (12359, 1740333), (15267, 1408841), (35517, 605591), (35623, 603789), (37077, 580111), (82873, 259539), (86513, 248619), (106869, 201263)]