19901808

素因数分解:

$2^4\times 3^3\times {\mathrm{23}}^1\times {\mathrm{2003}}^1$

素因数の和:2043

約数の個数: 80

約数和(自身を含む): 59639040

約数和(自身を除く): 39737232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 27, 36, 46, 48, 54, 69, 72, 92, 108, 138, 144, 184, 207, 216, 276, 368, 414, 432, 552, 621, 828, 1104, 1242, 1656, 2003, 2484, 3312, 4006, 4968, 6009, 8012, 9936, 12018, 16024, 18027, 24036, 32048, 36054, 46069, 48072, 54081, 72108, 92138, 96144, 108162, 138207, 144216, 184276, 216324, 276414, 288432, 368552, 414621, 432648, 552828, 737104, 829242, 865296, 1105656, 1243863, 1658484, 2211312, 2487726, 3316968, 4975452, 6633936, 9950904, 19901808]

約数ペア:

[(1, 19901808), (2, 9950904), (3, 6633936), (4, 4975452), (6, 3316968), (8, 2487726), (9, 2211312), (12, 1658484), (16, 1243863), (18, 1105656), (23, 865296), (24, 829242), (27, 737104), (36, 552828), (46, 432648), (48, 414621), (54, 368552), (69, 288432), (72, 276414), (92, 216324), (108, 184276), (138, 144216), (144, 138207), (184, 108162), (207, 96144), (216, 92138), (276, 72108), (368, 54081), (414, 48072), (432, 46069), (552, 36054), (621, 32048), (828, 24036), (1104, 18027), (1242, 16024), (1656, 12018), (2003, 9936), (2484, 8012), (3312, 6009), (4006, 4968)]