18960004

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 40320000

約数和(自身を除く): 21359996

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 59, 92, 118, 161, 236, 322, 413, 499, 644, 826, 998, 1357, 1652, 1996, 2714, 3493, 5428, 6986, 9499, 11477, 13972, 18998, 22954, 29441, 37996, 45908, 58882, 80339, 117764, 160678, 206087, 321356, 412174, 677143, 824348, 1354286, 2708572, 4740001, 9480002, 18960004]

約数ペア:

[(1, 18960004), (2, 9480002), (4, 4740001), (7, 2708572), (14, 1354286), (23, 824348), (28, 677143), (46, 412174), (59, 321356), (92, 206087), (118, 160678), (161, 117764), (236, 80339), (322, 58882), (413, 45908), (499, 37996), (644, 29441), (826, 22954), (998, 18998), (1357, 13972), (1652, 11477), (1996, 9499), (2714, 6986), (3493, 5428)]