20403320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72869}}^1$

素因数の和:72887

約数の個数: 32

約数和(自身を含む): 52466400

約数和(自身を除く): 32063080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72869, 145738, 291476, 364345, 510083, 582952, 728690, 1020166, 1457380, 2040332, 2550415, 2914760, 4080664, 5100830, 10201660, 20403320]

約数ペア:

[(1, 20403320), (2, 10201660), (4, 5100830), (5, 4080664), (7, 2914760), (8, 2550415), (10, 2040332), (14, 1457380), (20, 1020166), (28, 728690), (35, 582952), (40, 510083), (56, 364345), (70, 291476), (140, 145738), (280, 72869)]