19939665

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 33278976

約数和(自身を除く): 13339311

約数列:

[1, 3, 5, 15, 31, 93, 137, 155, 313, 411, 465, 685, 939, 1565, 2055, 4247, 4695, 9703, 12741, 21235, 29109, 42881, 48515, 63705, 128643, 145545, 214405, 643215, 1329311, 3987933, 6646555, 19939665]

約数ペア:

[(1, 19939665), (3, 6646555), (5, 3987933), (15, 1329311), (31, 643215), (93, 214405), (137, 145545), (155, 128643), (313, 63705), (411, 48515), (465, 42881), (685, 29109), (939, 21235), (1565, 12741), (2055, 9703), (4247, 4695)]