20785221

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1307}}^1$

素因数の和:1366

約数の個数: 32

約数和(自身を含む): 33484800

約数和(自身を除く): 12699579

約数列:

[1, 3, 9, 19, 27, 31, 57, 93, 171, 279, 513, 589, 837, 1307, 1767, 3921, 5301, 11763, 15903, 24833, 35289, 40517, 74499, 121551, 223497, 364653, 670491, 769823, 1093959, 2309469, 6928407, 20785221]

約数ペア:

[(1, 20785221), (3, 6928407), (9, 2309469), (19, 1093959), (27, 769823), (31, 670491), (57, 364653), (93, 223497), (171, 121551), (279, 74499), (513, 40517), (589, 35289), (837, 24833), (1307, 15903), (1767, 11763), (3921, 5301)]