78072820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{557663}}^1$

素因数の和:557679

約数の個数: 24

約数和(自身を含む): 187375104

約数和(自身を除く): 109302284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 557663, 1115326, 2230652, 2788315, 3903641, 5576630, 7807282, 11153260, 15614564, 19518205, 39036410, 78072820]

約数ペア:

[(1, 78072820), (2, 39036410), (4, 19518205), (5, 15614564), (7, 11153260), (10, 7807282), (14, 5576630), (20, 3903641), (28, 2788315), (35, 2230652), (70, 1115326), (140, 557663)]