18968481

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 33696000

約数和(自身を除く): 14727519

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 89, 119, 153, 199, 267, 357, 597, 623, 801, 1071, 1393, 1513, 1791, 1869, 3383, 4179, 4539, 5607, 10149, 10591, 12537, 13617, 17711, 23681, 30447, 31773, 53133, 71043, 95319, 123977, 159399, 213129, 301087, 371931, 903261, 1115793, 2107609, 2709783, 6322827, 18968481]

約数ペア:

[(1, 18968481), (3, 6322827), (7, 2709783), (9, 2107609), (17, 1115793), (21, 903261), (51, 371931), (63, 301087), (89, 213129), (119, 159399), (153, 123977), (199, 95319), (267, 71043), (357, 53133), (597, 31773), (623, 30447), (801, 23681), (1071, 17711), (1393, 13617), (1513, 12537), (1791, 10591), (1869, 10149), (3383, 5607), (4179, 4539)]