18749885

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1571}}^1$

素因数の和:1625

約数の個数: 32

約数和(自身を含む): 28975104

約数和(自身を除く): 10225219

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1571, 1705, 2387, 7855, 10997, 11935, 17281, 48701, 54985, 86405, 120967, 243505, 340907, 535711, 604835, 1704535, 2678555, 3749977, 18749885]

約数ペア:

[(1, 18749885), (5, 3749977), (7, 2678555), (11, 1704535), (31, 604835), (35, 535711), (55, 340907), (77, 243505), (155, 120967), (217, 86405), (341, 54985), (385, 48701), (1085, 17281), (1571, 11935), (1705, 10997), (2387, 7855)]