211679920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{491}}^1$

素因数の和:838

約数の個数: 80

約数和(自身を含む): 523814688

約数和(自身を除く): 312134768

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 317, 340, 491, 634, 680, 982, 1268, 1360, 1585, 1964, 2455, 2536, 3170, 3928, 4910, 5072, 5389, 6340, 7856, 8347, 9820, 10778, 12680, 16694, 19640, 21556, 25360, 26945, 33388, 39280, 41735, 43112, 53890, 66776, 83470, 86224, 107780, 133552, 155647, 166940, 215560, 311294, 333880, 431120, 622588, 667760, 778235, 1245176, 1556470, 2490352, 2645999, 3112940, 5291998, 6225880, 10583996, 12451760, 13229995, 21167992, 26459990, 42335984, 52919980, 105839960, 211679920]

約数ペア:

[(1, 211679920), (2, 105839960), (4, 52919980), (5, 42335984), (8, 26459990), (10, 21167992), (16, 13229995), (17, 12451760), (20, 10583996), (34, 6225880), (40, 5291998), (68, 3112940), (80, 2645999), (85, 2490352), (136, 1556470), (170, 1245176), (272, 778235), (317, 667760), (340, 622588), (491, 431120), (634, 333880), (680, 311294), (982, 215560), (1268, 166940), (1360, 155647), (1585, 133552), (1964, 107780), (2455, 86224), (2536, 83470), (3170, 66776), (3928, 53890), (4910, 43112), (5072, 41735), (5389, 39280), (6340, 33388), (7856, 26945), (8347, 25360), (9820, 21556), (10778, 19640), (12680, 16694)]