21512095

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{4951}}^1$

素因数の和:5046

約数の個数: 16

約数和(自身を含む): 28523520

約数和(自身を除く): 7011425

約数列:

[1, 5, 11, 55, 79, 395, 869, 4345, 4951, 24755, 54461, 272305, 391129, 1955645, 4302419, 21512095]

約数ペア:

[(1, 21512095), (5, 4302419), (11, 1955645), (55, 391129), (79, 272305), (395, 54461), (869, 24755), (4345, 4951)]