21153745

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5431}}^1$

素因数の和:5496

約数の個数: 16

約数和(自身を含む): 27377280

約数和(自身を除く): 6223535

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5431, 27155, 103189, 222671, 515945, 1113355, 4230749, 21153745]

約数ペア:

[(1, 21153745), (5, 4230749), (19, 1113355), (41, 515945), (95, 222671), (205, 103189), (779, 27155), (3895, 5431)]