21811779

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4157}}^1$

素因数の和:4227

約数の個数: 24

約数和(自身を含む): 35026992

約数和(自身を除く): 13215213

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 4157, 5247, 12471, 37413, 45727, 137181, 220321, 411543, 660963, 1982889, 2423531, 7270593, 21811779]

約数ペア:

[(1, 21811779), (3, 7270593), (9, 2423531), (11, 1982889), (33, 660963), (53, 411543), (99, 220321), (159, 137181), (477, 45727), (583, 37413), (1749, 12471), (4157, 5247)]