21254640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:207

約数の個数: 160

約数和(自身を含む): 73495296

約数和(自身を除く): 52240656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 83, 88, 97, 110, 120, 132, 165, 166, 176, 194, 220, 240, 249, 264, 291, 330, 332, 388, 415, 440, 485, 498, 528, 582, 660, 664, 776, 830, 880, 913, 970, 996, 1067, 1164, 1245, 1320, 1328, 1455, 1552, 1660, 1826, 1940, 1992, 2134, 2328, 2490, 2640, 2739, 2910, 3201, 3320, 3652, 3880, 3984, 4268, 4565, 4656, 4980, 5335, 5478, 5820, 6402, 6640, 7304, 7760, 8051, 8536, 9130, 9960, 10670, 10956, 11640, 12804, 13695, 14608, 16005, 16102, 17072, 18260, 19920, 21340, 21912, 23280, 24153, 25608, 27390, 32010, 32204, 36520, 40255, 42680, 43824, 48306, 51216, 54780, 64020, 64408, 73040, 80510, 85360, 88561, 96612, 109560, 120765, 128040, 128816, 161020, 177122, 193224, 219120, 241530, 256080, 265683, 322040, 354244, 386448, 442805, 483060, 531366, 644080, 708488, 885610, 966120, 1062732, 1328415, 1416976, 1771220, 1932240, 2125464, 2656830, 3542440, 4250928, 5313660, 7084880, 10627320, 21254640]

約数ペア:

[(1, 21254640), (2, 10627320), (3, 7084880), (4, 5313660), (5, 4250928), (6, 3542440), (8, 2656830), (10, 2125464), (11, 1932240), (12, 1771220), (15, 1416976), (16, 1328415), (20, 1062732), (22, 966120), (24, 885610), (30, 708488), (33, 644080), (40, 531366), (44, 483060), (48, 442805), (55, 386448), (60, 354244), (66, 322040), (80, 265683), (83, 256080), (88, 241530), (97, 219120), (110, 193224), (120, 177122), (132, 161020), (165, 128816), (166, 128040), (176, 120765), (194, 109560), (220, 96612), (240, 88561), (249, 85360), (264, 80510), (291, 73040), (330, 64408), (332, 64020), (388, 54780), (415, 51216), (440, 48306), (485, 43824), (498, 42680), (528, 40255), (582, 36520), (660, 32204), (664, 32010), (776, 27390), (830, 25608), (880, 24153), (913, 23280), (970, 21912), (996, 21340), (1067, 19920), (1164, 18260), (1245, 17072), (1320, 16102), (1328, 16005), (1455, 14608), (1552, 13695), (1660, 12804), (1826, 11640), (1940, 10956), (1992, 10670), (2134, 9960), (2328, 9130), (2490, 8536), (2640, 8051), (2739, 7760), (2910, 7304), (3201, 6640), (3320, 6402), (3652, 5820), (3880, 5478), (3984, 5335), (4268, 4980), (4565, 4656)]