78440180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:214

約数の個数: 144

約数和(自身を含む): 212357376

約数和(自身を除く): 133917196

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 47, 49, 52, 65, 70, 91, 94, 98, 130, 131, 140, 182, 188, 196, 235, 245, 260, 262, 329, 364, 455, 470, 490, 524, 611, 637, 655, 658, 910, 917, 940, 980, 1222, 1274, 1310, 1316, 1645, 1703, 1820, 1834, 2303, 2444, 2548, 2620, 3055, 3185, 3290, 3406, 3668, 4277, 4585, 4606, 6110, 6157, 6370, 6419, 6580, 6812, 8515, 8554, 9170, 9212, 11515, 11921, 12220, 12314, 12740, 12838, 17030, 17108, 18340, 21385, 23030, 23842, 24628, 25676, 29939, 30785, 32095, 34060, 42770, 43099, 46060, 47684, 59605, 59878, 61570, 64190, 80041, 83447, 85540, 86198, 119210, 119756, 123140, 128380, 149695, 160082, 166894, 172396, 215495, 238420, 299390, 301693, 320164, 333788, 400205, 417235, 430990, 560287, 598780, 603386, 800410, 834470, 861980, 1120574, 1206772, 1508465, 1600820, 1668940, 2241148, 2801435, 3016930, 3922009, 5602870, 6033860, 7844018, 11205740, 15688036, 19610045, 39220090, 78440180]

約数ペア:

[(1, 78440180), (2, 39220090), (4, 19610045), (5, 15688036), (7, 11205740), (10, 7844018), (13, 6033860), (14, 5602870), (20, 3922009), (26, 3016930), (28, 2801435), (35, 2241148), (47, 1668940), (49, 1600820), (52, 1508465), (65, 1206772), (70, 1120574), (91, 861980), (94, 834470), (98, 800410), (130, 603386), (131, 598780), (140, 560287), (182, 430990), (188, 417235), (196, 400205), (235, 333788), (245, 320164), (260, 301693), (262, 299390), (329, 238420), (364, 215495), (455, 172396), (470, 166894), (490, 160082), (524, 149695), (611, 128380), (637, 123140), (655, 119756), (658, 119210), (910, 86198), (917, 85540), (940, 83447), (980, 80041), (1222, 64190), (1274, 61570), (1310, 59878), (1316, 59605), (1645, 47684), (1703, 46060), (1820, 43099), (1834, 42770), (2303, 34060), (2444, 32095), (2548, 30785), (2620, 29939), (3055, 25676), (3185, 24628), (3290, 23842), (3406, 23030), (3668, 21385), (4277, 18340), (4585, 17108), (4606, 17030), (6110, 12838), (6157, 12740), (6370, 12314), (6419, 12220), (6580, 11921), (6812, 11515), (8515, 9212), (8554, 9170)]