20481885

素因数分解:

$3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2383}}^1$

素因数の和:2585

約数の個数: 24

約数和(自身を含む): 35702784

約数和(自身を除く): 15220899

約数列:

[1, 3, 5, 9, 15, 45, 191, 573, 955, 1719, 2383, 2865, 7149, 8595, 11915, 21447, 35745, 107235, 455153, 1365459, 2275765, 4096377, 6827295, 20481885]

約数ペア:

[(1, 20481885), (3, 6827295), (5, 4096377), (9, 2275765), (15, 1365459), (45, 455153), (191, 107235), (573, 35745), (955, 21447), (1719, 11915), (2383, 8595), (2865, 7149)]