1921859135

素因数分解:

$5^1\times 7^2\times {\mathrm{397}}^1\times {\mathrm{19759}}^1$

素因数の和:20175

約数の個数: 24

約数和(自身を含む): 2689652160

約数和(自身を除く): 767793025

約数列:

[1, 5, 7, 35, 49, 245, 397, 1985, 2779, 13895, 19453, 19759, 97265, 98795, 138313, 691565, 968191, 4840955, 7844323, 39221615, 54910261, 274551305, 384371827, 1921859135]

約数ペア:

[(1, 1921859135), (5, 384371827), (7, 274551305), (35, 54910261), (49, 39221615), (245, 7844323), (397, 4840955), (1985, 968191), (2779, 691565), (13895, 138313), (19453, 98795), (19759, 97265)]