17918253

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{1409}}^1$

素因数の和:1578

約数の個数: 20

約数和(自身を含む): 26956380

約数和(自身を除く): 9038127

約数列:

[1, 3, 9, 27, 81, 157, 471, 1409, 1413, 4227, 4239, 12681, 12717, 38043, 114129, 221213, 663639, 1990917, 5972751, 17918253]

約数ペア:

[(1, 17918253), (3, 5972751), (9, 1990917), (27, 663639), (81, 221213), (157, 114129), (471, 38043), (1409, 12717), (1413, 12681), (4227, 4239)]