21090405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{200861}}^1$

素因数の和:200876

約数の個数: 16

約数和(自身を含む): 38565504

約数和(自身を除く): 17475099

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 200861, 602583, 1004305, 1406027, 3012915, 4218081, 7030135, 21090405]

約数ペア:

[(1, 21090405), (3, 7030135), (5, 4218081), (7, 3012915), (15, 1406027), (21, 1004305), (35, 602583), (105, 200861)]