20071996840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1\times {\mathrm{1373}}^1$

素因数の和:1979

約数の個数: 128

約数和(自身を含む): 52233984000

約数和(自身を除く): 32161987160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 280, 436, 479, 545, 763, 872, 958, 1090, 1373, 1526, 1916, 2180, 2395, 2746, 3052, 3353, 3815, 3832, 4360, 4790, 5492, 6104, 6706, 6865, 7630, 9580, 9611, 10984, 13412, 13730, 15260, 16765, 19160, 19222, 26824, 27460, 30520, 33530, 38444, 48055, 52211, 54920, 67060, 76888, 96110, 104422, 134120, 149657, 192220, 208844, 261055, 299314, 365477, 384440, 417688, 522110, 598628, 657667, 730954, 748285, 1044220, 1047599, 1197256, 1315334, 1461908, 1496570, 1827385, 2088440, 2095198, 2630668, 2923816, 2993140, 3288335, 3654770, 4190396, 4603669, 5237995, 5261336, 5986280, 6576670, 7309540, 8380792, 9207338, 10475990, 13153340, 14619080, 18414676, 20951980, 23018345, 26306680, 36829352, 41903960, 46036690, 71685703, 92073380, 143371406, 184146760, 286742812, 358428515, 501799921, 573485624, 716857030, 1003599842, 1433714060, 2007199684, 2508999605, 2867428120, 4014399368, 5017999210, 10035998420, 20071996840]

約数ペア:

[(1, 20071996840), (2, 10035998420), (4, 5017999210), (5, 4014399368), (7, 2867428120), (8, 2508999605), (10, 2007199684), (14, 1433714060), (20, 1003599842), (28, 716857030), (35, 573485624), (40, 501799921), (56, 358428515), (70, 286742812), (109, 184146760), (140, 143371406), (218, 92073380), (280, 71685703), (436, 46036690), (479, 41903960), (545, 36829352), (763, 26306680), (872, 23018345), (958, 20951980), (1090, 18414676), (1373, 14619080), (1526, 13153340), (1916, 10475990), (2180, 9207338), (2395, 8380792), (2746, 7309540), (3052, 6576670), (3353, 5986280), (3815, 5261336), (3832, 5237995), (4360, 4603669), (4790, 4190396), (5492, 3654770), (6104, 3288335), (6706, 2993140), (6865, 2923816), (7630, 2630668), (9580, 2095198), (9611, 2088440), (10984, 1827385), (13412, 1496570), (13730, 1461908), (15260, 1315334), (16765, 1197256), (19160, 1047599), (19222, 1044220), (26824, 748285), (27460, 730954), (30520, 657667), (33530, 598628), (38444, 522110), (48055, 417688), (52211, 384440), (54920, 365477), (67060, 299314), (76888, 261055), (96110, 208844), (104422, 192220), (134120, 149657)]