21470505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{204481}}^1$

素因数の和:204496

約数の個数: 16

約数和(自身を含む): 39260544

約数和(自身を除く): 17790039

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 204481, 613443, 1022405, 1431367, 3067215, 4294101, 7156835, 21470505]

約数ペア:

[(1, 21470505), (3, 7156835), (5, 4294101), (7, 3067215), (15, 1431367), (21, 1022405), (35, 613443), (105, 204481)]