18718956

素因数分解:

$2^2\times 3^2\times {\mathrm{519971}}^1$

素因数の和:519981

約数の個数: 18

約数和(自身を含む): 47317452

約数和(自身を除く): 28598496

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 519971, 1039942, 1559913, 2079884, 3119826, 4679739, 6239652, 9359478, 18718956]

約数ペア:

[(1, 18718956), (2, 9359478), (3, 6239652), (4, 4679739), (6, 3119826), (9, 2079884), (12, 1559913), (18, 1039942), (36, 519971)]