136920280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{489001}}^1$

素因数の和:489019

約数の個数: 32

約数和(自身を含む): 352081440

約数和(自身を除く): 215161160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 489001, 978002, 1956004, 2445005, 3423007, 3912008, 4890010, 6846014, 9780020, 13692028, 17115035, 19560040, 27384056, 34230070, 68460140, 136920280]

約数ペア:

[(1, 136920280), (2, 68460140), (4, 34230070), (5, 27384056), (7, 19560040), (8, 17115035), (10, 13692028), (14, 9780020), (20, 6846014), (28, 4890010), (35, 3912008), (40, 3423007), (56, 2445005), (70, 1956004), (140, 978002), (280, 489001)]