128817380

素因数分解:

$2^2\times 5^1\times {\mathrm{1481}}^1\times {\mathrm{4349}}^1$

素因数の和:5839

約数の個数: 24

約数和(自身を含む): 270761400

約数和(自身を除く): 141944020

約数列:

[1, 2, 4, 5, 10, 20, 1481, 2962, 4349, 5924, 7405, 8698, 14810, 17396, 21745, 29620, 43490, 86980, 6440869, 12881738, 25763476, 32204345, 64408690, 128817380]

約数ペア:

[(1, 128817380), (2, 64408690), (4, 32204345), (5, 25763476), (10, 12881738), (20, 6440869), (1481, 86980), (2962, 43490), (4349, 29620), (5924, 21745), (7405, 17396), (8698, 14810)]