178781720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{499}}^1$

素因数の和:589

約数の個数: 96

約数和(自身を含む): 444690000

約数和(自身を除く): 265908280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 169, 212, 260, 265, 338, 424, 499, 520, 530, 676, 689, 845, 998, 1060, 1352, 1378, 1690, 1996, 2120, 2495, 2756, 3380, 3445, 3992, 4990, 5512, 6487, 6760, 6890, 8957, 9980, 12974, 13780, 17914, 19960, 25948, 26447, 27560, 32435, 35828, 44785, 51896, 52894, 64870, 71656, 84331, 89570, 105788, 129740, 132235, 168662, 179140, 211576, 259480, 264470, 337324, 343811, 358280, 421655, 528940, 674648, 687622, 843310, 1057880, 1375244, 1686620, 1719055, 2750488, 3373240, 3438110, 4469543, 6876220, 8939086, 13752440, 17878172, 22347715, 35756344, 44695430, 89390860, 178781720]

約数ペア:

[(1, 178781720), (2, 89390860), (4, 44695430), (5, 35756344), (8, 22347715), (10, 17878172), (13, 13752440), (20, 8939086), (26, 6876220), (40, 4469543), (52, 3438110), (53, 3373240), (65, 2750488), (104, 1719055), (106, 1686620), (130, 1375244), (169, 1057880), (212, 843310), (260, 687622), (265, 674648), (338, 528940), (424, 421655), (499, 358280), (520, 343811), (530, 337324), (676, 264470), (689, 259480), (845, 211576), (998, 179140), (1060, 168662), (1352, 132235), (1378, 129740), (1690, 105788), (1996, 89570), (2120, 84331), (2495, 71656), (2756, 64870), (3380, 52894), (3445, 51896), (3992, 44785), (4990, 35828), (5512, 32435), (6487, 27560), (6760, 26447), (6890, 25948), (8957, 19960), (9980, 17914), (12974, 13780)]