19922539

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 25859456

約数和(自身を除く): 5936917

約数列:

[1, 7, 13, 37, 61, 91, 97, 259, 427, 481, 679, 793, 1261, 2257, 3367, 3589, 5551, 5917, 8827, 15799, 25123, 29341, 41419, 46657, 76921, 205387, 218929, 326599, 538447, 1532503, 2846077, 19922539]

約数ペア:

[(1, 19922539), (7, 2846077), (13, 1532503), (37, 538447), (61, 326599), (91, 218929), (97, 205387), (259, 76921), (427, 46657), (481, 41419), (679, 29341), (793, 25123), (1261, 15799), (2257, 8827), (3367, 5917), (3589, 5551)]