148380020

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{21017}}^1$

素因数の和:21379

約数の個数: 24

約数和(自身を含む): 312495624

約数和(自身を除く): 164115604

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3530, 7060, 21017, 42034, 84068, 105085, 210170, 420340, 7419001, 14838002, 29676004, 37095005, 74190010, 148380020]

約数ペア:

[(1, 148380020), (2, 74190010), (4, 37095005), (5, 29676004), (10, 14838002), (20, 7419001), (353, 420340), (706, 210170), (1412, 105085), (1765, 84068), (3530, 42034), (7060, 21017)]