21177765

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67231}}^1$

素因数の和:67249

約数の個数: 24

約数和(自身を含む): 41952768

約数和(自身を除く): 20775003

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67231, 201693, 336155, 470617, 605079, 1008465, 1411851, 2353085, 3025395, 4235553, 7059255, 21177765]

約数ペア:

[(1, 21177765), (3, 7059255), (5, 4235553), (7, 3025395), (9, 2353085), (15, 1411851), (21, 1008465), (35, 605079), (45, 470617), (63, 336155), (105, 201693), (315, 67231)]