19995274

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{8641}}^1$

素因数の和:8745

約数の個数: 16

約数和(自身を含む): 32666760

約数和(自身を除く): 12671486

約数列:

[1, 2, 13, 26, 89, 178, 1157, 2314, 8641, 17282, 112333, 224666, 769049, 1538098, 9997637, 19995274]

約数ペア:

[(1, 19995274), (2, 9997637), (13, 1538098), (26, 769049), (89, 224666), (178, 112333), (1157, 17282), (2314, 8641)]