21788940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{363149}}^1$

素因数の和:363161

約数の個数: 24

約数和(自身を含む): 61009200

約数和(自身を除く): 39220260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 363149, 726298, 1089447, 1452596, 1815745, 2178894, 3631490, 4357788, 5447235, 7262980, 10894470, 21788940]

約数ペア:

[(1, 21788940), (2, 10894470), (3, 7262980), (4, 5447235), (5, 4357788), (6, 3631490), (10, 2178894), (12, 1815745), (15, 1452596), (20, 1089447), (30, 726298), (60, 363149)]