7782020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20479}}^1$

素因数の和:20507

約数の個数: 24

約数和(自身を含む): 17203200

約数和(自身を除く): 9421180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 20479, 40958, 81916, 102395, 204790, 389101, 409580, 778202, 1556404, 1945505, 3891010, 7782020]

約数ペア:

[(1, 7782020), (2, 3891010), (4, 1945505), (5, 1556404), (10, 778202), (19, 409580), (20, 389101), (38, 204790), (76, 102395), (95, 81916), (190, 40958), (380, 20479)]