19878970

素因数分解:

$2^1\times 5^1\times {\mathrm{751}}^1\times {\mathrm{2647}}^1$

素因数の和:3405

約数の個数: 16

約数和(自身を含む): 35843328

約数和(自身を除く): 15964358

約数列:

[1, 2, 5, 10, 751, 1502, 2647, 3755, 5294, 7510, 13235, 26470, 1987897, 3975794, 9939485, 19878970]

約数ペア:

[(1, 19878970), (2, 9939485), (5, 3975794), (10, 1987897), (751, 26470), (1502, 13235), (2647, 7510), (3755, 5294)]