19904248

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1439}}^1$

素因数の和:1484

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 28479752

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1439, 1729, 1976, 2878, 3458, 5756, 6916, 10073, 11512, 13832, 18707, 20146, 27341, 37414, 40292, 54682, 74828, 80584, 109364, 130949, 149656, 191387, 218728, 261898, 355433, 382774, 523796, 710866, 765548, 1047592, 1421732, 1531096, 2488031, 2843464, 4976062, 9952124, 19904248]

約数ペア:

[(1, 19904248), (2, 9952124), (4, 4976062), (7, 2843464), (8, 2488031), (13, 1531096), (14, 1421732), (19, 1047592), (26, 765548), (28, 710866), (38, 523796), (52, 382774), (56, 355433), (76, 261898), (91, 218728), (104, 191387), (133, 149656), (152, 130949), (182, 109364), (247, 80584), (266, 74828), (364, 54682), (494, 40292), (532, 37414), (728, 27341), (988, 20146), (1064, 18707), (1439, 13832), (1729, 11512), (1976, 10073), (2878, 6916), (3458, 5756)]