21131530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2377}}^1$

素因数の和:2518

約数の個数: 32

約数和(自身を含む): 43831296

約数和(自身を除く): 22699766

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 127, 254, 635, 889, 1270, 1778, 2377, 4445, 4754, 8890, 11885, 16639, 23770, 33278, 83195, 166390, 301879, 603758, 1509395, 2113153, 3018790, 4226306, 10565765, 21131530]

約数ペア:

[(1, 21131530), (2, 10565765), (5, 4226306), (7, 3018790), (10, 2113153), (14, 1509395), (35, 603758), (70, 301879), (127, 166390), (254, 83195), (635, 33278), (889, 23770), (1270, 16639), (1778, 11885), (2377, 8890), (4445, 4754)]