257101840

素因数分解:

$2^4\times 5^1\times {\mathrm{3213773}}^1$

素因数の和:3213786

約数の個数: 20

約数和(自身を含む): 597761964

約数和(自身を除く): 340660124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3213773, 6427546, 12855092, 16068865, 25710184, 32137730, 51420368, 64275460, 128550920, 257101840]

約数ペア:

[(1, 257101840), (2, 128550920), (4, 64275460), (5, 51420368), (8, 32137730), (10, 25710184), (16, 16068865), (20, 12855092), (40, 6427546), (80, 3213773)]