20906543

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:494

約数の個数: 16

約数和(自身を含む): 24466176

約数和(自身を除く): 3559633

約数列:

[1, 7, 73, 163, 251, 511, 1141, 1757, 11899, 18323, 40913, 83293, 128261, 286391, 2986649, 20906543]

約数ペア:

[(1, 20906543), (7, 2986649), (73, 286391), (163, 128261), (251, 83293), (511, 40913), (1141, 18323), (1757, 11899)]