20971314

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:125

約数の個数: 144

約数和(自身を含む): 59754240

約数和(自身を除く): 38782926

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 31, 39, 42, 49, 59, 62, 63, 78, 91, 93, 98, 117, 118, 126, 147, 177, 182, 186, 217, 234, 273, 279, 294, 354, 403, 413, 434, 441, 531, 546, 558, 637, 651, 767, 806, 819, 826, 882, 1062, 1209, 1239, 1274, 1302, 1519, 1534, 1638, 1829, 1911, 1953, 2301, 2418, 2478, 2821, 2891, 3038, 3627, 3658, 3717, 3822, 3906, 4557, 4602, 5369, 5487, 5642, 5733, 5782, 6903, 7254, 7434, 8463, 8673, 9114, 10738, 10974, 11466, 12803, 13671, 13806, 16107, 16461, 16926, 17346, 19747, 23777, 25389, 25606, 26019, 27342, 32214, 32922, 37583, 38409, 39494, 47554, 48321, 50778, 52038, 59241, 71331, 75166, 76818, 89621, 96642, 112749, 115227, 118482, 142662, 166439, 177723, 179242, 213993, 225498, 230454, 268863, 332878, 338247, 355446, 427986, 499317, 537726, 676494, 806589, 998634, 1165073, 1497951, 1613178, 2330146, 2995902, 3495219, 6990438, 10485657, 20971314]

約数ペア:

[(1, 20971314), (2, 10485657), (3, 6990438), (6, 3495219), (7, 2995902), (9, 2330146), (13, 1613178), (14, 1497951), (18, 1165073), (21, 998634), (26, 806589), (31, 676494), (39, 537726), (42, 499317), (49, 427986), (59, 355446), (62, 338247), (63, 332878), (78, 268863), (91, 230454), (93, 225498), (98, 213993), (117, 179242), (118, 177723), (126, 166439), (147, 142662), (177, 118482), (182, 115227), (186, 112749), (217, 96642), (234, 89621), (273, 76818), (279, 75166), (294, 71331), (354, 59241), (403, 52038), (413, 50778), (434, 48321), (441, 47554), (531, 39494), (546, 38409), (558, 37583), (637, 32922), (651, 32214), (767, 27342), (806, 26019), (819, 25606), (826, 25389), (882, 23777), (1062, 19747), (1209, 17346), (1239, 16926), (1274, 16461), (1302, 16107), (1519, 13806), (1534, 13671), (1638, 12803), (1829, 11466), (1911, 10974), (1953, 10738), (2301, 9114), (2418, 8673), (2478, 8463), (2821, 7434), (2891, 7254), (3038, 6903), (3627, 5782), (3658, 5733), (3717, 5642), (3822, 5487), (3906, 5369), (4557, 4602)]