7980380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{21001}}^1$

素因数の和:21029

約数の個数: 24

約数和(自身を含む): 17641680

約数和(自身を除く): 9661300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 21001, 42002, 84004, 105005, 210010, 399019, 420020, 798038, 1596076, 1995095, 3990190, 7980380]

約数ペア:

[(1, 7980380), (2, 3990190), (4, 1995095), (5, 1596076), (10, 798038), (19, 420020), (20, 399019), (38, 210010), (76, 105005), (95, 84004), (190, 42002), (380, 21001)]