19903520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1367}}^1$

素因数の和:1402

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 38012128

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1367, 1456, 1820, 2080, 2734, 2912, 3640, 5468, 6835, 7280, 9569, 10936, 13670, 14560, 17771, 19138, 21872, 27340, 35542, 38276, 43744, 47845, 54680, 71084, 76552, 88855, 95690, 109360, 124397, 142168, 153104, 177710, 191380, 218720, 248794, 284336, 306208, 355420, 382760, 497588, 568672, 621985, 710840, 765520, 995176, 1243970, 1421680, 1531040, 1990352, 2487940, 2843360, 3980704, 4975880, 9951760, 19903520]

約数ペア:

[(1, 19903520), (2, 9951760), (4, 4975880), (5, 3980704), (7, 2843360), (8, 2487940), (10, 1990352), (13, 1531040), (14, 1421680), (16, 1243970), (20, 995176), (26, 765520), (28, 710840), (32, 621985), (35, 568672), (40, 497588), (52, 382760), (56, 355420), (65, 306208), (70, 284336), (80, 248794), (91, 218720), (104, 191380), (112, 177710), (130, 153104), (140, 142168), (160, 124397), (182, 109360), (208, 95690), (224, 88855), (260, 76552), (280, 71084), (364, 54680), (416, 47845), (455, 43744), (520, 38276), (560, 35542), (728, 27340), (910, 21872), (1040, 19138), (1120, 17771), (1367, 14560), (1456, 13670), (1820, 10936), (2080, 9569), (2734, 7280), (2912, 6835), (3640, 5468)]