18266920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{65239}}^1$

素因数の和:65257

約数の個数: 32

約数和(自身を含む): 46972800

約数和(自身を除く): 28705880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 65239, 130478, 260956, 326195, 456673, 521912, 652390, 913346, 1304780, 1826692, 2283365, 2609560, 3653384, 4566730, 9133460, 18266920]

約数ペア:

[(1, 18266920), (2, 9133460), (4, 4566730), (5, 3653384), (7, 2609560), (8, 2283365), (10, 1826692), (14, 1304780), (20, 913346), (28, 652390), (35, 521912), (40, 456673), (56, 326195), (70, 260956), (140, 130478), (280, 65239)]