19959918

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1447}}^1$

素因数の和:1493

約数の個数: 48

約数和(自身を含む): 46220160

約数和(自身を除く): 26260242

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 114, 121, 209, 242, 363, 418, 627, 726, 1254, 1447, 2299, 2894, 4341, 4598, 6897, 8682, 13794, 15917, 27493, 31834, 47751, 54986, 82479, 95502, 164958, 175087, 302423, 350174, 525261, 604846, 907269, 1050522, 1814538, 3326653, 6653306, 9979959, 19959918]

約数ペア:

[(1, 19959918), (2, 9979959), (3, 6653306), (6, 3326653), (11, 1814538), (19, 1050522), (22, 907269), (33, 604846), (38, 525261), (57, 350174), (66, 302423), (114, 175087), (121, 164958), (209, 95502), (242, 82479), (363, 54986), (418, 47751), (627, 31834), (726, 27493), (1254, 15917), (1447, 13794), (2299, 8682), (2894, 6897), (4341, 4598)]