1387340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1057

約数の個数: 24

約数和(自身を含む): 2957472

約数和(自身を除く): 1570132

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 977, 1420, 1954, 3908, 4885, 9770, 19540, 69367, 138734, 277468, 346835, 693670, 1387340]

約数ペア:

[(1, 1387340), (2, 693670), (4, 346835), (5, 277468), (10, 138734), (20, 69367), (71, 19540), (142, 9770), (284, 4885), (355, 3908), (710, 1954), (977, 1420)]