20123781381

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{911}}^1\times {\mathrm{223129}}^1$

素因数の和:224057

約数の個数: 24

約数和(自身を含む): 31745151360

約数和(自身を除く): 11621369979

約数列:

[1, 3, 9, 11, 33, 99, 911, 2733, 8199, 10021, 30063, 90189, 223129, 669387, 2008161, 2454419, 7363257, 22089771, 203270519, 609811557, 1829434671, 2235975709, 6707927127, 20123781381]

約数ペア:

[(1, 20123781381), (3, 6707927127), (9, 2235975709), (11, 1829434671), (33, 609811557), (99, 203270519), (911, 22089771), (2733, 7363257), (8199, 2454419), (10021, 2008161), (30063, 669387), (90189, 223129)]