15561399

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 25569280

約数和(自身を除く): 10007881

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 907, 2451, 2721, 5719, 6349, 17157, 17233, 19047, 39001, 51699, 117003, 120631, 273007, 361893, 741019, 819021, 2223057, 5187133, 15561399]

約数ペア:

[(1, 15561399), (3, 5187133), (7, 2223057), (19, 819021), (21, 741019), (43, 361893), (57, 273007), (129, 120631), (133, 117003), (301, 51699), (399, 39001), (817, 19047), (903, 17233), (907, 17157), (2451, 6349), (2721, 5719)]