19993761

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 29601000

約数和(自身を除く): 9607239

約数列:

[1, 3, 9, 89, 109, 229, 267, 327, 687, 801, 981, 2061, 9701, 20381, 24961, 29103, 61143, 74883, 87309, 183429, 224649, 2221529, 6664587, 19993761]

約数ペア:

[(1, 19993761), (3, 6664587), (9, 2221529), (89, 224649), (109, 183429), (229, 87309), (267, 74883), (327, 61143), (687, 29103), (801, 24961), (981, 20381), (2061, 9701)]