21056085

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8209}}^1$

素因数の和:8242

約数の個数: 32

約数和(自身を含む): 39408000

約数和(自身を除く): 18351915

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8209, 24627, 41045, 73881, 123135, 155971, 221643, 369405, 467913, 779855, 1108215, 1403739, 2339565, 4211217, 7018695, 21056085]

約数ペア:

[(1, 21056085), (3, 7018695), (5, 4211217), (9, 2339565), (15, 1403739), (19, 1108215), (27, 779855), (45, 467913), (57, 369405), (95, 221643), (135, 155971), (171, 123135), (285, 73881), (513, 41045), (855, 24627), (2565, 8209)]