20161515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1721}}^1$

素因数の和:1811

約数の個数: 32

約数和(自身を含む): 35707392

約数和(自身を除く): 15545877

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 1721, 2343, 3905, 5163, 8605, 11715, 18931, 25815, 56793, 94655, 122191, 283965, 366573, 610955, 1344101, 1832865, 4032303, 6720505, 20161515]

約数ペア:

[(1, 20161515), (3, 6720505), (5, 4032303), (11, 1832865), (15, 1344101), (33, 610955), (55, 366573), (71, 283965), (165, 122191), (213, 94655), (355, 56793), (781, 25815), (1065, 18931), (1721, 11715), (2343, 8605), (3905, 5163)]