19211220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 67791360

約数和(自身を除く): 48580140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 79, 84, 90, 105, 126, 140, 158, 180, 193, 210, 237, 252, 315, 316, 386, 395, 420, 474, 553, 579, 630, 711, 772, 790, 948, 965, 1106, 1158, 1185, 1260, 1351, 1422, 1580, 1659, 1737, 1930, 2212, 2316, 2370, 2702, 2765, 2844, 2895, 3318, 3474, 3555, 3860, 4053, 4740, 4977, 5404, 5530, 5790, 6636, 6755, 6948, 7110, 8106, 8295, 8685, 9954, 11060, 11580, 12159, 13510, 14220, 15247, 16212, 16590, 17370, 19908, 20265, 24318, 24885, 27020, 30494, 33180, 34740, 40530, 45741, 48636, 49770, 60795, 60988, 76235, 81060, 91482, 99540, 106729, 121590, 137223, 152470, 182964, 213458, 228705, 243180, 274446, 304940, 320187, 426916, 457410, 533645, 548892, 640374, 686115, 914820, 960561, 1067290, 1280748, 1372230, 1600935, 1921122, 2134580, 2744460, 3201870, 3842244, 4802805, 6403740, 9605610, 19211220]

約数ペア:

[(1, 19211220), (2, 9605610), (3, 6403740), (4, 4802805), (5, 3842244), (6, 3201870), (7, 2744460), (9, 2134580), (10, 1921122), (12, 1600935), (14, 1372230), (15, 1280748), (18, 1067290), (20, 960561), (21, 914820), (28, 686115), (30, 640374), (35, 548892), (36, 533645), (42, 457410), (45, 426916), (60, 320187), (63, 304940), (70, 274446), (79, 243180), (84, 228705), (90, 213458), (105, 182964), (126, 152470), (140, 137223), (158, 121590), (180, 106729), (193, 99540), (210, 91482), (237, 81060), (252, 76235), (315, 60988), (316, 60795), (386, 49770), (395, 48636), (420, 45741), (474, 40530), (553, 34740), (579, 33180), (630, 30494), (711, 27020), (772, 24885), (790, 24318), (948, 20265), (965, 19908), (1106, 17370), (1158, 16590), (1185, 16212), (1260, 15247), (1351, 14220), (1422, 13510), (1580, 12159), (1659, 11580), (1737, 11060), (1930, 9954), (2212, 8685), (2316, 8295), (2370, 8106), (2702, 7110), (2765, 6948), (2844, 6755), (2895, 6636), (3318, 5790), (3474, 5530), (3555, 5404), (3860, 4977), (4053, 4740)]