1878904839

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{643681}}^1$

素因数の和:643830

約数の個数: 16

約数和(自身を含む): 2883695360

約数和(自身を除く): 1004790521

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 643681, 1931043, 4505767, 13517301, 89471659, 268414977, 626301613, 1878904839]

約数ペア:

[(1, 1878904839), (3, 626301613), (7, 268414977), (21, 89471659), (139, 13517301), (417, 4505767), (973, 1931043), (2919, 643681)]