28552251

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 48620544

約数和(自身を除く): 20068293

約数列:

[1, 3, 7, 13, 21, 39, 49, 67, 91, 147, 201, 223, 273, 469, 637, 669, 871, 1407, 1561, 1911, 2613, 2899, 3283, 4683, 6097, 8697, 9849, 10927, 14941, 18291, 20293, 32781, 42679, 44823, 60879, 104587, 128037, 142051, 194233, 313761, 426153, 582699, 732109, 1359631, 2196327, 4078893, 9517417, 28552251]

約数ペア:

[(1, 28552251), (3, 9517417), (7, 4078893), (13, 2196327), (21, 1359631), (39, 732109), (49, 582699), (67, 426153), (91, 313761), (147, 194233), (201, 142051), (223, 128037), (273, 104587), (469, 60879), (637, 44823), (669, 42679), (871, 32781), (1407, 20293), (1561, 18291), (1911, 14941), (2613, 10927), (2899, 9849), (3283, 8697), (4683, 6097)]