21640374

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 34968906

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 41, 42, 59, 63, 71, 82, 118, 123, 126, 142, 177, 213, 246, 287, 354, 369, 413, 426, 497, 531, 574, 639, 738, 826, 861, 994, 1062, 1239, 1278, 1491, 1722, 2419, 2478, 2583, 2911, 2982, 3717, 4189, 4473, 4838, 5166, 5822, 7257, 7434, 8378, 8733, 8946, 12567, 14514, 16933, 17466, 20377, 21771, 25134, 26199, 29323, 33866, 37701, 40754, 43542, 50799, 52398, 58646, 61131, 75402, 87969, 101598, 122262, 152397, 171749, 175938, 183393, 263907, 304794, 343498, 366786, 515247, 527814, 1030494, 1202243, 1545741, 2404486, 3091482, 3606729, 7213458, 10820187, 21640374]

約数ペア:

[(1, 21640374), (2, 10820187), (3, 7213458), (6, 3606729), (7, 3091482), (9, 2404486), (14, 1545741), (18, 1202243), (21, 1030494), (41, 527814), (42, 515247), (59, 366786), (63, 343498), (71, 304794), (82, 263907), (118, 183393), (123, 175938), (126, 171749), (142, 152397), (177, 122262), (213, 101598), (246, 87969), (287, 75402), (354, 61131), (369, 58646), (413, 52398), (426, 50799), (497, 43542), (531, 40754), (574, 37701), (639, 33866), (738, 29323), (826, 26199), (861, 25134), (994, 21771), (1062, 20377), (1239, 17466), (1278, 16933), (1491, 14514), (1722, 12567), (2419, 8946), (2478, 8733), (2583, 8378), (2911, 7434), (2982, 7257), (3717, 5822), (4189, 5166), (4473, 4838)]