19291251

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6907}}^1$

素因数の和:6943

約数の個数: 24

約数和(自身を含む): 31500480

約数和(自身を除く): 12209229

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 6907, 20721, 48349, 131233, 145047, 338443, 393699, 918631, 1015329, 2755893, 6430417, 19291251]

約数ペア:

[(1, 19291251), (3, 6430417), (7, 2755893), (19, 1015329), (21, 918631), (49, 393699), (57, 338443), (133, 145047), (147, 131233), (399, 48349), (931, 20721), (2793, 6907)]