78409980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^2$

素因数の和:424

約数の個数: 108

約数和(自身を含む): 260776152

約数和(自身を除く): 182366172

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 199, 220, 330, 396, 398, 495, 597, 660, 796, 990, 995, 1194, 1791, 1980, 1990, 2189, 2388, 2985, 3582, 3980, 4378, 5970, 6567, 7164, 8756, 8955, 10945, 11940, 13134, 17910, 19701, 21890, 26268, 32835, 35820, 39402, 39601, 43780, 65670, 78804, 79202, 98505, 118803, 131340, 158404, 197010, 198005, 237606, 356409, 394020, 396010, 435611, 475212, 594015, 712818, 792020, 871222, 1188030, 1306833, 1425636, 1742444, 1782045, 2178055, 2376060, 2613666, 3564090, 3920499, 4356110, 5227332, 6534165, 7128180, 7840998, 8712220, 13068330, 15681996, 19602495, 26136660, 39204990, 78409980]

約数ペア:

[(1, 78409980), (2, 39204990), (3, 26136660), (4, 19602495), (5, 15681996), (6, 13068330), (9, 8712220), (10, 7840998), (11, 7128180), (12, 6534165), (15, 5227332), (18, 4356110), (20, 3920499), (22, 3564090), (30, 2613666), (33, 2376060), (36, 2178055), (44, 1782045), (45, 1742444), (55, 1425636), (60, 1306833), (66, 1188030), (90, 871222), (99, 792020), (110, 712818), (132, 594015), (165, 475212), (180, 435611), (198, 396010), (199, 394020), (220, 356409), (330, 237606), (396, 198005), (398, 197010), (495, 158404), (597, 131340), (660, 118803), (796, 98505), (990, 79202), (995, 78804), (1194, 65670), (1791, 43780), (1980, 39601), (1990, 39402), (2189, 35820), (2388, 32835), (2985, 26268), (3582, 21890), (3980, 19701), (4378, 17910), (5970, 13134), (6567, 11940), (7164, 10945), (8756, 8955)]