19881568

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:284

約数の個数: 96

約数和(自身を含む): 49641984

約数和(自身を除く): 29760416

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 23, 28, 32, 34, 46, 56, 68, 92, 112, 119, 136, 161, 184, 224, 227, 238, 272, 322, 368, 391, 454, 476, 544, 644, 736, 782, 908, 952, 1288, 1564, 1589, 1816, 1904, 2576, 2737, 3128, 3178, 3632, 3808, 3859, 5152, 5221, 5474, 6256, 6356, 7264, 7718, 10442, 10948, 12512, 12712, 15436, 20884, 21896, 25424, 27013, 30872, 36547, 41768, 43792, 50848, 54026, 61744, 73094, 83536, 87584, 88757, 108052, 123488, 146188, 167072, 177514, 216104, 292376, 355028, 432208, 584752, 621299, 710056, 864416, 1169504, 1242598, 1420112, 2485196, 2840224, 4970392, 9940784, 19881568]

約数ペア:

[(1, 19881568), (2, 9940784), (4, 4970392), (7, 2840224), (8, 2485196), (14, 1420112), (16, 1242598), (17, 1169504), (23, 864416), (28, 710056), (32, 621299), (34, 584752), (46, 432208), (56, 355028), (68, 292376), (92, 216104), (112, 177514), (119, 167072), (136, 146188), (161, 123488), (184, 108052), (224, 88757), (227, 87584), (238, 83536), (272, 73094), (322, 61744), (368, 54026), (391, 50848), (454, 43792), (476, 41768), (544, 36547), (644, 30872), (736, 27013), (782, 25424), (908, 21896), (952, 20884), (1288, 15436), (1564, 12712), (1589, 12512), (1816, 10948), (1904, 10442), (2576, 7718), (2737, 7264), (3128, 6356), (3178, 6256), (3632, 5474), (3808, 5221), (3859, 5152)]