1721349

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 2882880

約数和(自身を除く): 1161531

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 307, 623, 801, 921, 1869, 2149, 2763, 5607, 6447, 19341, 27323, 81969, 191261, 245907, 573783, 1721349]

約数ペア:

[(1, 1721349), (3, 573783), (7, 245907), (9, 191261), (21, 81969), (63, 27323), (89, 19341), (267, 6447), (307, 5607), (623, 2763), (801, 2149), (921, 1869)]