421256260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1238989}}^1$

素因数の和:1239015

約数の個数: 24

約数和(自身を含む): 936676440

約数和(自身を除く): 515420180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1238989, 2477978, 4955956, 6194945, 12389890, 21062813, 24779780, 42125626, 84251252, 105314065, 210628130, 421256260]

約数ペア:

[(1, 421256260), (2, 210628130), (4, 105314065), (5, 84251252), (10, 42125626), (17, 24779780), (20, 21062813), (34, 12389890), (68, 6194945), (85, 4955956), (170, 2477978), (340, 1238989)]