397323649540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{279805387}}^1$

素因数の和:279805467

約数の個数: 24

約数和(自身を含む): 846131493312

約数和(自身を除く): 448807843772

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 279805387, 559610774, 1119221548, 1399026935, 2798053870, 5596107740, 19866182477, 39732364954, 79464729908, 99330912385, 198661824770, 397323649540]

約数ペア:

[(1, 397323649540), (2, 198661824770), (4, 99330912385), (5, 79464729908), (10, 39732364954), (20, 19866182477), (71, 5596107740), (142, 2798053870), (284, 1399026935), (355, 1119221548), (710, 559610774), (1420, 279805387)]