20915622

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^2$

素因数の和:254

約数の個数: 72

約数和(自身を含む): 56272944

約数和(自身を除く): 35357322

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 113, 117, 126, 182, 226, 234, 273, 339, 546, 678, 791, 819, 1017, 1469, 1582, 1638, 2034, 2373, 2938, 4407, 4746, 7119, 8814, 10283, 12769, 13221, 14238, 20566, 25538, 26442, 30849, 38307, 61698, 76614, 89383, 92547, 114921, 165997, 178766, 185094, 229842, 268149, 331994, 497991, 536298, 804447, 995982, 1161979, 1493973, 1608894, 2323958, 2987946, 3485937, 6971874, 10457811, 20915622]

約数ペア:

[(1, 20915622), (2, 10457811), (3, 6971874), (6, 3485937), (7, 2987946), (9, 2323958), (13, 1608894), (14, 1493973), (18, 1161979), (21, 995982), (26, 804447), (39, 536298), (42, 497991), (63, 331994), (78, 268149), (91, 229842), (113, 185094), (117, 178766), (126, 165997), (182, 114921), (226, 92547), (234, 89383), (273, 76614), (339, 61698), (546, 38307), (678, 30849), (791, 26442), (819, 25538), (1017, 20566), (1469, 14238), (1582, 13221), (1638, 12769), (2034, 10283), (2373, 8814), (2938, 7119), (4407, 4746)]