21909705

素因数分解:

$3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{9803}}^1$

素因数の和:9960

約数の個数: 16

約数和(自身を含む): 35294400

約数和(自身を除く): 13384695

約数列:

[1, 3, 5, 15, 149, 447, 745, 2235, 9803, 29409, 49015, 147045, 1460647, 4381941, 7303235, 21909705]

約数ペア:

[(1, 21909705), (3, 7303235), (5, 4381941), (15, 1460647), (149, 147045), (447, 49015), (745, 29409), (2235, 9803)]