21106384

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 47996928

約数和(自身を除く): 26890544

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 47, 52, 68, 94, 104, 127, 136, 188, 208, 221, 254, 272, 376, 442, 508, 611, 752, 799, 884, 1016, 1222, 1598, 1651, 1768, 2032, 2159, 2444, 3196, 3302, 3536, 4318, 4888, 5969, 6392, 6604, 8636, 9776, 10387, 11938, 12784, 13208, 17272, 20774, 23876, 26416, 28067, 34544, 41548, 47752, 56134, 77597, 83096, 95504, 101473, 112268, 155194, 166192, 202946, 224536, 310388, 405892, 449072, 620776, 811784, 1241552, 1319149, 1623568, 2638298, 5276596, 10553192, 21106384]

約数ペア:

[(1, 21106384), (2, 10553192), (4, 5276596), (8, 2638298), (13, 1623568), (16, 1319149), (17, 1241552), (26, 811784), (34, 620776), (47, 449072), (52, 405892), (68, 310388), (94, 224536), (104, 202946), (127, 166192), (136, 155194), (188, 112268), (208, 101473), (221, 95504), (254, 83096), (272, 77597), (376, 56134), (442, 47752), (508, 41548), (611, 34544), (752, 28067), (799, 26416), (884, 23876), (1016, 20774), (1222, 17272), (1598, 13208), (1651, 12784), (1768, 11938), (2032, 10387), (2159, 9776), (2444, 8636), (3196, 6604), (3302, 6392), (3536, 5969), (4318, 4888)]