21384705

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{727}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 35852544

約数和(自身を除く): 14467839

約数列:

[1, 3, 5, 15, 37, 53, 111, 159, 185, 265, 555, 727, 795, 1961, 2181, 3635, 5883, 9805, 10905, 26899, 29415, 38531, 80697, 115593, 134495, 192655, 403485, 577965, 1425647, 4276941, 7128235, 21384705]

約数ペア:

[(1, 21384705), (3, 7128235), (5, 4276941), (15, 1425647), (37, 577965), (53, 403485), (111, 192655), (159, 134495), (185, 115593), (265, 80697), (555, 38531), (727, 29415), (795, 26899), (1961, 10905), (2181, 9805), (3635, 5883)]