20090917178

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1\times {\mathrm{423341}}^1$

素因数の和:423793

約数の個数: 16

約数和(自身を含む): 30709228680

約数和(自身を除く): 10618311502

約数列:

[1, 2, 61, 122, 389, 778, 23729, 47458, 423341, 846682, 25823801, 51647602, 164679649, 329359298, 10045458589, 20090917178]

約数ペア:

[(1, 20090917178), (2, 10045458589), (61, 329359298), (122, 164679649), (389, 51647602), (778, 25823801), (23729, 846682), (47458, 423341)]