21597765

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3881}}^1$

素因数の和:3949

約数の個数: 32

約数和(自身を含む): 40248576

約数和(自身を除く): 18650811

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3881, 5565, 11643, 19405, 27167, 58215, 81501, 135835, 205693, 407505, 617079, 1028465, 1439851, 3085395, 4319553, 7199255, 21597765]

約数ペア:

[(1, 21597765), (3, 7199255), (5, 4319553), (7, 3085395), (15, 1439851), (21, 1028465), (35, 617079), (53, 407505), (105, 205693), (159, 135835), (265, 81501), (371, 58215), (795, 27167), (1113, 19405), (1855, 11643), (3881, 5565)]