28142660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^2$

素因数の和:130

約数の個数: 108

約数和(自身を含む): 75645612

約数和(自身を除く): 47502952

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 47, 49, 52, 65, 70, 91, 94, 98, 130, 140, 182, 188, 196, 235, 245, 260, 329, 364, 455, 470, 490, 611, 637, 658, 910, 940, 980, 1222, 1274, 1316, 1645, 1820, 2209, 2303, 2444, 2548, 3055, 3185, 3290, 4277, 4418, 4606, 6110, 6370, 6580, 8554, 8836, 9212, 11045, 11515, 12220, 12740, 15463, 17108, 21385, 22090, 23030, 28717, 29939, 30926, 42770, 44180, 46060, 57434, 59878, 61852, 77315, 85540, 108241, 114868, 119756, 143585, 149695, 154630, 201019, 216482, 287170, 299390, 309260, 402038, 432964, 541205, 574340, 598780, 804076, 1005095, 1082410, 1407133, 2010190, 2164820, 2814266, 4020380, 5628532, 7035665, 14071330, 28142660]

約数ペア:

[(1, 28142660), (2, 14071330), (4, 7035665), (5, 5628532), (7, 4020380), (10, 2814266), (13, 2164820), (14, 2010190), (20, 1407133), (26, 1082410), (28, 1005095), (35, 804076), (47, 598780), (49, 574340), (52, 541205), (65, 432964), (70, 402038), (91, 309260), (94, 299390), (98, 287170), (130, 216482), (140, 201019), (182, 154630), (188, 149695), (196, 143585), (235, 119756), (245, 114868), (260, 108241), (329, 85540), (364, 77315), (455, 61852), (470, 59878), (490, 57434), (611, 46060), (637, 44180), (658, 42770), (910, 30926), (940, 29939), (980, 28717), (1222, 23030), (1274, 22090), (1316, 21385), (1645, 17108), (1820, 15463), (2209, 12740), (2303, 12220), (2444, 11515), (2548, 11045), (3055, 9212), (3185, 8836), (3290, 8554), (4277, 6580), (4418, 6370), (4606, 6110)]