90090280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{321751}}^1$

素因数の和:321769

約数の個数: 32

約数和(自身を含む): 231661440

約数和(自身を除く): 141571160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 321751, 643502, 1287004, 1608755, 2252257, 2574008, 3217510, 4504514, 6435020, 9009028, 11261285, 12870040, 18018056, 22522570, 45045140, 90090280]

約数ペア:

[(1, 90090280), (2, 45045140), (4, 22522570), (5, 18018056), (7, 12870040), (8, 11261285), (10, 9009028), (14, 6435020), (20, 4504514), (28, 3217510), (35, 2574008), (40, 2252257), (56, 1608755), (70, 1287004), (140, 643502), (280, 321751)]