78708080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:255

約数の個数: 120

約数和(自身を含む): 206611776

約数和(自身を除く): 127903696

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 47, 55, 80, 88, 94, 110, 121, 173, 176, 188, 220, 235, 242, 346, 376, 440, 470, 484, 517, 605, 692, 752, 865, 880, 940, 968, 1034, 1210, 1384, 1730, 1880, 1903, 1936, 2068, 2420, 2585, 2768, 3460, 3760, 3806, 4136, 4840, 5170, 5687, 6920, 7612, 8131, 8272, 9515, 9680, 10340, 11374, 13840, 15224, 16262, 19030, 20680, 20933, 22748, 28435, 30448, 32524, 38060, 40655, 41360, 41866, 45496, 56870, 65048, 76120, 81310, 83732, 89441, 90992, 104665, 113740, 130096, 152240, 162620, 167464, 178882, 209330, 227480, 325240, 334928, 357764, 418660, 447205, 454960, 650480, 715528, 837320, 894410, 983851, 1431056, 1674640, 1788820, 1967702, 3577640, 3935404, 4919255, 7155280, 7870808, 9838510, 15741616, 19677020, 39354040, 78708080]

約数ペア:

[(1, 78708080), (2, 39354040), (4, 19677020), (5, 15741616), (8, 9838510), (10, 7870808), (11, 7155280), (16, 4919255), (20, 3935404), (22, 3577640), (40, 1967702), (44, 1788820), (47, 1674640), (55, 1431056), (80, 983851), (88, 894410), (94, 837320), (110, 715528), (121, 650480), (173, 454960), (176, 447205), (188, 418660), (220, 357764), (235, 334928), (242, 325240), (346, 227480), (376, 209330), (440, 178882), (470, 167464), (484, 162620), (517, 152240), (605, 130096), (692, 113740), (752, 104665), (865, 90992), (880, 89441), (940, 83732), (968, 81310), (1034, 76120), (1210, 65048), (1384, 56870), (1730, 45496), (1880, 41866), (1903, 41360), (1936, 40655), (2068, 38060), (2420, 32524), (2585, 30448), (2768, 28435), (3460, 22748), (3760, 20933), (3806, 20680), (4136, 19030), (4840, 16262), (5170, 15224), (5687, 13840), (6920, 11374), (7612, 10340), (8131, 9680), (8272, 9515)]