54721975

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 89565696

約数和(自身を除く): 34843721

約数列:

[1, 5, 7, 11, 25, 31, 35, 49, 55, 77, 131, 155, 175, 217, 245, 275, 341, 385, 539, 655, 775, 917, 1085, 1225, 1441, 1519, 1705, 1925, 2387, 2695, 3275, 4061, 4585, 5425, 6419, 7205, 7595, 8525, 10087, 11935, 13475, 16709, 20305, 22925, 28427, 32095, 36025, 37975, 44671, 50435, 59675, 70609, 83545, 101525, 142135, 160475, 198989, 223355, 252175, 312697, 353045, 417725, 710675, 994945, 1116775, 1563485, 1765225, 2188879, 4974725, 7817425, 10944395, 54721975]

約数ペア:

[(1, 54721975), (5, 10944395), (7, 7817425), (11, 4974725), (25, 2188879), (31, 1765225), (35, 1563485), (49, 1116775), (55, 994945), (77, 710675), (131, 417725), (155, 353045), (175, 312697), (217, 252175), (245, 223355), (275, 198989), (341, 160475), (385, 142135), (539, 101525), (655, 83545), (775, 70609), (917, 59675), (1085, 50435), (1225, 44671), (1441, 37975), (1519, 36025), (1705, 32095), (1925, 28427), (2387, 22925), (2695, 20305), (3275, 16709), (4061, 13475), (4585, 11935), (5425, 10087), (6419, 8525), (7205, 7595)]