18921978

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 44668800

約数和(自身を除く): 25746822

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 43, 54, 58, 86, 87, 129, 174, 258, 261, 281, 387, 522, 562, 774, 783, 843, 1161, 1247, 1566, 1686, 2322, 2494, 2529, 3741, 5058, 7482, 7587, 8149, 11223, 12083, 15174, 16298, 22446, 24166, 24447, 33669, 36249, 48894, 67338, 72498, 73341, 108747, 146682, 217494, 220023, 326241, 350407, 440046, 652482, 700814, 1051221, 2102442, 3153663, 6307326, 9460989, 18921978]

約数ペア:

[(1, 18921978), (2, 9460989), (3, 6307326), (6, 3153663), (9, 2102442), (18, 1051221), (27, 700814), (29, 652482), (43, 440046), (54, 350407), (58, 326241), (86, 220023), (87, 217494), (129, 146682), (174, 108747), (258, 73341), (261, 72498), (281, 67338), (387, 48894), (522, 36249), (562, 33669), (774, 24447), (783, 24166), (843, 22446), (1161, 16298), (1247, 15174), (1566, 12083), (1686, 11223), (2322, 8149), (2494, 7587), (2529, 7482), (3741, 5058)]