78211280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139663}}^1$

素因数の和:139683

約数の個数: 40

約数和(自身を含む): 207820032

約数和(自身を除く): 129608752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 139663, 279326, 558652, 698315, 977641, 1117304, 1396630, 1955282, 2234608, 2793260, 3910564, 4888205, 5586520, 7821128, 9776410, 11173040, 15642256, 19552820, 39105640, 78211280]

約数ペア:

[(1, 78211280), (2, 39105640), (4, 19552820), (5, 15642256), (7, 11173040), (8, 9776410), (10, 7821128), (14, 5586520), (16, 4888205), (20, 3910564), (28, 2793260), (35, 2234608), (40, 1955282), (56, 1396630), (70, 1117304), (80, 977641), (112, 698315), (140, 558652), (280, 279326), (560, 139663)]