18986637

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^2$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 27686016

約数和(自身を除く): 8699379

約数列:

[1, 3, 17, 47, 51, 89, 141, 267, 799, 1513, 2397, 4183, 4539, 7921, 12549, 23763, 71111, 134657, 213333, 372287, 403971, 1116861, 6328879, 18986637]

約数ペア:

[(1, 18986637), (3, 6328879), (17, 1116861), (47, 403971), (51, 372287), (89, 213333), (141, 134657), (267, 71111), (799, 23763), (1513, 12549), (2397, 7921), (4183, 4539)]