20419217

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{491}}^1$

素因数の和:968

約数の個数: 16

約数和(自身を含む): 25237632

約数和(自身を除く): 4818415

約数列:

[1, 7, 13, 91, 457, 491, 3199, 3437, 5941, 6383, 41587, 44681, 224387, 1570709, 2917031, 20419217]

約数ペア:

[(1, 20419217), (7, 2917031), (13, 1570709), (91, 224387), (457, 44681), (491, 41587), (3199, 6383), (3437, 5941)]