21310520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:94

約数の個数: 192

約数和(自身を含む): 65499840

約数和(自身を除く): 44189320

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 17, 20, 22, 28, 34, 35, 37, 40, 44, 55, 56, 68, 70, 74, 77, 85, 88, 110, 119, 121, 136, 140, 148, 154, 170, 185, 187, 220, 238, 242, 259, 280, 296, 308, 340, 370, 374, 385, 407, 440, 476, 484, 518, 595, 605, 616, 629, 680, 740, 748, 770, 814, 847, 935, 952, 968, 1036, 1190, 1210, 1258, 1295, 1309, 1480, 1496, 1540, 1628, 1694, 1870, 2035, 2057, 2072, 2380, 2420, 2516, 2590, 2618, 2849, 3080, 3145, 3256, 3388, 3740, 4070, 4114, 4235, 4403, 4477, 4760, 4840, 5032, 5180, 5236, 5698, 6290, 6545, 6776, 6919, 7480, 8140, 8228, 8470, 8806, 8954, 10285, 10360, 10472, 11396, 12580, 13090, 13838, 14245, 14399, 16280, 16456, 16940, 17612, 17908, 20570, 22015, 22385, 22792, 25160, 26180, 27676, 28490, 28798, 31339, 33880, 34595, 35224, 35816, 41140, 44030, 44770, 48433, 52360, 55352, 56980, 57596, 62678, 69190, 71995, 76109, 82280, 88060, 89540, 96866, 113960, 115192, 125356, 138380, 143990, 152218, 156695, 176120, 179080, 193732, 242165, 250712, 276760, 287980, 304436, 313390, 380545, 387464, 484330, 532763, 575960, 608872, 626780, 761090, 968660, 1065526, 1253560, 1522180, 1937320, 2131052, 2663815, 3044360, 4262104, 5327630, 10655260, 21310520]

約数ペア:

[(1, 21310520), (2, 10655260), (4, 5327630), (5, 4262104), (7, 3044360), (8, 2663815), (10, 2131052), (11, 1937320), (14, 1522180), (17, 1253560), (20, 1065526), (22, 968660), (28, 761090), (34, 626780), (35, 608872), (37, 575960), (40, 532763), (44, 484330), (55, 387464), (56, 380545), (68, 313390), (70, 304436), (74, 287980), (77, 276760), (85, 250712), (88, 242165), (110, 193732), (119, 179080), (121, 176120), (136, 156695), (140, 152218), (148, 143990), (154, 138380), (170, 125356), (185, 115192), (187, 113960), (220, 96866), (238, 89540), (242, 88060), (259, 82280), (280, 76109), (296, 71995), (308, 69190), (340, 62678), (370, 57596), (374, 56980), (385, 55352), (407, 52360), (440, 48433), (476, 44770), (484, 44030), (518, 41140), (595, 35816), (605, 35224), (616, 34595), (629, 33880), (680, 31339), (740, 28798), (748, 28490), (770, 27676), (814, 26180), (847, 25160), (935, 22792), (952, 22385), (968, 22015), (1036, 20570), (1190, 17908), (1210, 17612), (1258, 16940), (1295, 16456), (1309, 16280), (1480, 14399), (1496, 14245), (1540, 13838), (1628, 13090), (1694, 12580), (1870, 11396), (2035, 10472), (2057, 10360), (2072, 10285), (2380, 8954), (2420, 8806), (2516, 8470), (2590, 8228), (2618, 8140), (2849, 7480), (3080, 6919), (3145, 6776), (3256, 6545), (3388, 6290), (3740, 5698), (4070, 5236), (4114, 5180), (4235, 5032), (4403, 4840), (4477, 4760)]