21162015

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67181}}^1$

素因数の和:67199

約数の個数: 24

約数和(自身を含む): 41921568

約数和(自身を除く): 20759553

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67181, 201543, 335905, 470267, 604629, 1007715, 1410801, 2351335, 3023145, 4232403, 7054005, 21162015]

約数ペア:

[(1, 21162015), (3, 7054005), (5, 4232403), (7, 3023145), (9, 2351335), (15, 1410801), (21, 1007715), (35, 604629), (45, 470267), (63, 335905), (105, 201543), (315, 67181)]