206811990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2713}}^1$

素因数の和:2755

約数の個数: 144

約数和(自身を含む): 675720864

約数和(自身を除く): 468908874

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 55, 63, 66, 70, 77, 90, 99, 105, 110, 121, 126, 154, 165, 198, 210, 231, 242, 315, 330, 363, 385, 462, 495, 605, 630, 693, 726, 770, 847, 990, 1089, 1155, 1210, 1386, 1694, 1815, 2178, 2310, 2541, 2713, 3465, 3630, 4235, 5082, 5426, 5445, 6930, 7623, 8139, 8470, 10890, 12705, 13565, 15246, 16278, 18991, 24417, 25410, 27130, 29843, 37982, 38115, 40695, 48834, 56973, 59686, 76230, 81390, 89529, 94955, 113946, 122085, 149215, 170919, 179058, 189910, 208901, 244170, 268587, 284865, 298430, 328273, 341838, 417802, 447645, 537174, 569730, 626703, 656546, 854595, 895290, 984819, 1044505, 1253406, 1342935, 1641365, 1709190, 1880109, 1969638, 2089010, 2297911, 2685870, 2954457, 3133515, 3282730, 3760218, 4595822, 4924095, 5908914, 6267030, 6893733, 9400545, 9848190, 11489555, 13787466, 14772285, 18801090, 20681199, 22979110, 29544570, 34468665, 41362398, 68937330, 103405995, 206811990]

約数ペア:

[(1, 206811990), (2, 103405995), (3, 68937330), (5, 41362398), (6, 34468665), (7, 29544570), (9, 22979110), (10, 20681199), (11, 18801090), (14, 14772285), (15, 13787466), (18, 11489555), (21, 9848190), (22, 9400545), (30, 6893733), (33, 6267030), (35, 5908914), (42, 4924095), (45, 4595822), (55, 3760218), (63, 3282730), (66, 3133515), (70, 2954457), (77, 2685870), (90, 2297911), (99, 2089010), (105, 1969638), (110, 1880109), (121, 1709190), (126, 1641365), (154, 1342935), (165, 1253406), (198, 1044505), (210, 984819), (231, 895290), (242, 854595), (315, 656546), (330, 626703), (363, 569730), (385, 537174), (462, 447645), (495, 417802), (605, 341838), (630, 328273), (693, 298430), (726, 284865), (770, 268587), (847, 244170), (990, 208901), (1089, 189910), (1155, 179058), (1210, 170919), (1386, 149215), (1694, 122085), (1815, 113946), (2178, 94955), (2310, 89529), (2541, 81390), (2713, 76230), (3465, 59686), (3630, 56973), (4235, 48834), (5082, 40695), (5426, 38115), (5445, 37982), (6930, 29843), (7623, 27130), (8139, 25410), (8470, 24417), (10890, 18991), (12705, 16278), (13565, 15246)]