20964440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74873}}^1$

素因数の和:74891

約数の個数: 32

約数和(自身を含む): 53909280

約数和(自身を除く): 32944840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74873, 149746, 299492, 374365, 524111, 598984, 748730, 1048222, 1497460, 2096444, 2620555, 2994920, 4192888, 5241110, 10482220, 20964440]

約数ペア:

[(1, 20964440), (2, 10482220), (4, 5241110), (5, 4192888), (7, 2994920), (8, 2620555), (10, 2096444), (14, 1497460), (20, 1048222), (28, 748730), (35, 598984), (40, 524111), (56, 374365), (70, 299492), (140, 149746), (280, 74873)]