21204195

素因数分解:

$3^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{3191}}^1$

素因数の和:3642

約数の個数: 16

約数和(自身を含む): 34013952

約数和(自身を除く): 12809757

約数列:

[1, 3, 5, 15, 443, 1329, 2215, 3191, 6645, 9573, 15955, 47865, 1413613, 4240839, 7068065, 21204195]

約数ペア:

[(1, 21204195), (3, 7068065), (5, 4240839), (15, 1413613), (443, 47865), (1329, 15955), (2215, 9573), (3191, 6645)]