21281064

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 65664000

約数和(自身を除く): 44382936

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 38, 42, 56, 57, 59, 76, 84, 113, 114, 118, 133, 152, 168, 177, 226, 228, 236, 266, 339, 354, 399, 413, 452, 456, 472, 532, 678, 708, 791, 798, 826, 904, 1064, 1121, 1239, 1356, 1416, 1582, 1596, 1652, 2147, 2242, 2373, 2478, 2712, 3164, 3192, 3304, 3363, 4294, 4484, 4746, 4956, 6328, 6441, 6667, 6726, 7847, 8588, 8968, 9492, 9912, 12882, 13334, 13452, 15029, 15694, 17176, 18984, 20001, 23541, 25764, 26668, 26904, 30058, 31388, 40002, 45087, 46669, 47082, 51528, 53336, 60116, 62776, 80004, 90174, 93338, 94164, 120232, 126673, 140007, 160008, 180348, 186676, 188328, 253346, 280014, 360696, 373352, 380019, 506692, 560028, 760038, 886711, 1013384, 1120056, 1520076, 1773422, 2660133, 3040152, 3546844, 5320266, 7093688, 10640532, 21281064]

約数ペア:

[(1, 21281064), (2, 10640532), (3, 7093688), (4, 5320266), (6, 3546844), (7, 3040152), (8, 2660133), (12, 1773422), (14, 1520076), (19, 1120056), (21, 1013384), (24, 886711), (28, 760038), (38, 560028), (42, 506692), (56, 380019), (57, 373352), (59, 360696), (76, 280014), (84, 253346), (113, 188328), (114, 186676), (118, 180348), (133, 160008), (152, 140007), (168, 126673), (177, 120232), (226, 94164), (228, 93338), (236, 90174), (266, 80004), (339, 62776), (354, 60116), (399, 53336), (413, 51528), (452, 47082), (456, 46669), (472, 45087), (532, 40002), (678, 31388), (708, 30058), (791, 26904), (798, 26668), (826, 25764), (904, 23541), (1064, 20001), (1121, 18984), (1239, 17176), (1356, 15694), (1416, 15029), (1582, 13452), (1596, 13334), (1652, 12882), (2147, 9912), (2242, 9492), (2373, 8968), (2478, 8588), (2712, 7847), (3164, 6726), (3192, 6667), (3304, 6441), (3363, 6328), (4294, 4956), (4484, 4746)]