128425640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{458663}}^1$

素因数の和:458681

約数の個数: 32

約数和(自身を含む): 330238080

約数和(自身を除く): 201812440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 458663, 917326, 1834652, 2293315, 3210641, 3669304, 4586630, 6421282, 9173260, 12842564, 16053205, 18346520, 25685128, 32106410, 64212820, 128425640]

約数ペア:

[(1, 128425640), (2, 64212820), (4, 32106410), (5, 25685128), (7, 18346520), (8, 16053205), (10, 12842564), (14, 9173260), (20, 6421282), (28, 4586630), (35, 3669304), (40, 3210641), (56, 2293315), (70, 1834652), (140, 917326), (280, 458663)]