20787275

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 26892624

約数和(自身を除く): 6105349

約数列:

[1, 5, 25, 43, 61, 215, 305, 317, 1075, 1525, 1585, 2623, 7925, 13115, 13631, 19337, 65575, 68155, 96685, 340775, 483425, 831491, 4157455, 20787275]

約数ペア:

[(1, 20787275), (5, 4157455), (25, 831491), (43, 483425), (61, 340775), (215, 96685), (305, 68155), (317, 65575), (1075, 19337), (1525, 13631), (1585, 13115), (2623, 7925)]