21449715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{3049}}^1$

素因数の和:3131

約数の個数: 32

約数和(自身を含む): 39820800

約数和(自身を除く): 18371085

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 105, 201, 335, 469, 1005, 1407, 2345, 3049, 7035, 9147, 15245, 21343, 45735, 64029, 106715, 204283, 320145, 612849, 1021415, 1429981, 3064245, 4289943, 7149905, 21449715]

約数ペア:

[(1, 21449715), (3, 7149905), (5, 4289943), (7, 3064245), (15, 1429981), (21, 1021415), (35, 612849), (67, 320145), (105, 204283), (201, 106715), (335, 64029), (469, 45735), (1005, 21343), (1407, 15245), (2345, 9147), (3049, 7035)]