20627217

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1031}}^1$

素因数の和:1075

約数の個数: 40

約数和(自身を含む): 34964160

約数和(自身を除く): 14336943

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1031, 1053, 1539, 2223, 3093, 6669, 9279, 13403, 19589, 20007, 27837, 40209, 58767, 83511, 120627, 176301, 254657, 361881, 528903, 763971, 1085643, 1586709, 2291913, 6875739, 20627217]

約数ペア:

[(1, 20627217), (3, 6875739), (9, 2291913), (13, 1586709), (19, 1085643), (27, 763971), (39, 528903), (57, 361881), (81, 254657), (117, 176301), (171, 120627), (247, 83511), (351, 58767), (513, 40209), (741, 27837), (1031, 20007), (1053, 19589), (1539, 13403), (2223, 9279), (3093, 6669)]