21815065

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 26873856

約数和(自身を除く): 5058791

約数列:

[1, 5, 53, 191, 265, 431, 955, 2155, 10123, 22843, 50615, 82321, 114215, 411605, 4363013, 21815065]

約数ペア:

[(1, 21815065), (5, 4363013), (53, 411605), (191, 114215), (265, 82321), (431, 50615), (955, 22843), (2155, 10123)]