21081564

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 216

約数和(自身を含む): 70958160

約数和(自身を除く): 49876596

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 19, 21, 28, 34, 36, 37, 38, 42, 49, 51, 57, 63, 68, 74, 76, 84, 98, 102, 111, 114, 119, 126, 133, 147, 148, 153, 171, 196, 204, 222, 228, 238, 252, 259, 266, 294, 306, 323, 333, 342, 357, 399, 441, 444, 476, 518, 532, 588, 612, 629, 646, 666, 684, 703, 714, 777, 798, 833, 882, 931, 969, 1036, 1071, 1197, 1258, 1292, 1332, 1406, 1428, 1554, 1596, 1666, 1764, 1813, 1862, 1887, 1938, 2109, 2142, 2261, 2331, 2394, 2499, 2516, 2793, 2812, 2907, 3108, 3332, 3626, 3724, 3774, 3876, 4218, 4284, 4403, 4522, 4662, 4788, 4921, 4998, 5439, 5586, 5661, 5814, 6327, 6783, 7252, 7497, 7548, 8379, 8436, 8806, 9044, 9324, 9842, 9996, 10878, 11172, 11322, 11628, 11951, 12654, 13209, 13566, 14763, 14994, 15827, 16317, 16758, 17612, 19684, 20349, 21756, 22644, 23902, 25308, 26418, 27132, 29526, 29988, 30821, 31654, 32634, 33516, 34447, 35853, 39627, 40698, 44289, 47481, 47804, 52836, 59052, 61642, 63308, 65268, 68894, 71706, 79254, 81396, 83657, 88578, 92463, 94962, 103341, 107559, 123284, 137788, 142443, 143412, 158508, 167314, 177156, 184926, 189924, 206682, 215118, 250971, 277389, 284886, 310023, 334628, 369852, 413364, 430236, 501942, 554778, 569772, 585599, 620046, 752913, 1003884, 1109556, 1171198, 1240092, 1505826, 1756797, 2342396, 3011652, 3513594, 5270391, 7027188, 10540782, 21081564]

約数ペア:

[(1, 21081564), (2, 10540782), (3, 7027188), (4, 5270391), (6, 3513594), (7, 3011652), (9, 2342396), (12, 1756797), (14, 1505826), (17, 1240092), (18, 1171198), (19, 1109556), (21, 1003884), (28, 752913), (34, 620046), (36, 585599), (37, 569772), (38, 554778), (42, 501942), (49, 430236), (51, 413364), (57, 369852), (63, 334628), (68, 310023), (74, 284886), (76, 277389), (84, 250971), (98, 215118), (102, 206682), (111, 189924), (114, 184926), (119, 177156), (126, 167314), (133, 158508), (147, 143412), (148, 142443), (153, 137788), (171, 123284), (196, 107559), (204, 103341), (222, 94962), (228, 92463), (238, 88578), (252, 83657), (259, 81396), (266, 79254), (294, 71706), (306, 68894), (323, 65268), (333, 63308), (342, 61642), (357, 59052), (399, 52836), (441, 47804), (444, 47481), (476, 44289), (518, 40698), (532, 39627), (588, 35853), (612, 34447), (629, 33516), (646, 32634), (666, 31654), (684, 30821), (703, 29988), (714, 29526), (777, 27132), (798, 26418), (833, 25308), (882, 23902), (931, 22644), (969, 21756), (1036, 20349), (1071, 19684), (1197, 17612), (1258, 16758), (1292, 16317), (1332, 15827), (1406, 14994), (1428, 14763), (1554, 13566), (1596, 13209), (1666, 12654), (1764, 11951), (1813, 11628), (1862, 11322), (1887, 11172), (1938, 10878), (2109, 9996), (2142, 9842), (2261, 9324), (2331, 9044), (2394, 8806), (2499, 8436), (2516, 8379), (2793, 7548), (2812, 7497), (2907, 7252), (3108, 6783), (3332, 6327), (3626, 5814), (3724, 5661), (3774, 5586), (3876, 5439), (4218, 4998), (4284, 4921), (4403, 4788), (4522, 4662)]