21289203

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{463}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 34298880

約数和(自身を除く): 13009677

約数列:

[1, 3, 9, 13, 27, 39, 117, 131, 351, 393, 463, 1179, 1389, 1703, 3537, 4167, 5109, 6019, 12501, 15327, 18057, 45981, 54171, 60653, 162513, 181959, 545877, 788489, 1637631, 2365467, 7096401, 21289203]

約数ペア:

[(1, 21289203), (3, 7096401), (9, 2365467), (13, 1637631), (27, 788489), (39, 545877), (117, 181959), (131, 162513), (351, 60653), (393, 54171), (463, 45981), (1179, 18057), (1389, 15327), (1703, 12501), (3537, 6019), (4167, 5109)]