64949980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{170921}}^1$

素因数の和:170949

約数の個数: 24

約数和(自身を含む): 143574480

約数和(自身を除く): 78624500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 170921, 341842, 683684, 854605, 1709210, 3247499, 3418420, 6494998, 12989996, 16237495, 32474990, 64949980]

約数ペア:

[(1, 64949980), (2, 32474990), (4, 16237495), (5, 12989996), (10, 6494998), (19, 3418420), (20, 3247499), (38, 1709210), (76, 854605), (95, 683684), (190, 341842), (380, 170921)]