20501247

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 31494400

約数和(自身を除く): 10993153

約数列:

[1, 3, 13, 19, 39, 57, 73, 219, 247, 379, 741, 949, 1137, 1387, 2847, 4161, 4927, 7201, 14781, 18031, 21603, 27667, 54093, 83001, 93613, 280839, 359671, 525673, 1079013, 1577019, 6833749, 20501247]

約数ペア:

[(1, 20501247), (3, 6833749), (13, 1577019), (19, 1079013), (39, 525673), (57, 359671), (73, 280839), (219, 93613), (247, 83001), (379, 54093), (741, 27667), (949, 21603), (1137, 18031), (1387, 14781), (2847, 7201), (4161, 4927)]