721280196

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:551

約数の個数: 216

約数和(自身を含む): 2321452224

約数和(自身を除く): 1600172028

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 49, 52, 63, 71, 78, 84, 91, 98, 117, 126, 142, 147, 156, 182, 196, 213, 234, 252, 273, 284, 294, 364, 426, 441, 443, 468, 497, 546, 588, 637, 639, 819, 852, 882, 886, 923, 994, 1092, 1274, 1278, 1329, 1491, 1638, 1764, 1772, 1846, 1911, 1988, 2548, 2556, 2658, 2769, 2982, 3101, 3276, 3479, 3692, 3822, 3987, 4473, 5316, 5538, 5733, 5759, 5964, 6202, 6461, 6958, 7644, 7974, 8307, 8946, 9303, 10437, 11076, 11466, 11518, 12404, 12922, 13916, 15948, 16614, 17277, 17892, 18606, 19383, 20874, 21707, 22932, 23036, 25844, 27909, 31311, 31453, 33228, 34554, 37212, 38766, 40313, 41748, 43414, 45227, 51831, 55818, 58149, 62622, 62906, 65121, 69108, 77532, 80626, 86828, 90454, 94359, 103662, 111636, 116298, 120939, 125244, 125812, 130242, 135681, 161252, 180908, 188718, 195363, 207324, 220171, 232596, 241878, 260484, 271362, 282191, 283077, 362817, 377436, 390726, 407043, 408889, 440342, 483756, 542724, 564382, 566154, 660513, 725634, 781452, 814086, 817778, 846573, 880684, 1128764, 1132308, 1226667, 1321026, 1451268, 1541197, 1628172, 1635556, 1693146, 1981539, 2453334, 2539719, 2642052, 2862223, 3082394, 3386292, 3680001, 3963078, 4623591, 4906668, 5079438, 5724446, 6164788, 7360002, 7926156, 8586669, 9247182, 10158876, 11448892, 13870773, 14720004, 17173338, 18494364, 20035561, 25760007, 27741546, 34346676, 40071122, 51520014, 55483092, 60106683, 80142244, 103040028, 120213366, 180320049, 240426732, 360640098, 721280196]

約数ペア:

[(1, 721280196), (2, 360640098), (3, 240426732), (4, 180320049), (6, 120213366), (7, 103040028), (9, 80142244), (12, 60106683), (13, 55483092), (14, 51520014), (18, 40071122), (21, 34346676), (26, 27741546), (28, 25760007), (36, 20035561), (39, 18494364), (42, 17173338), (49, 14720004), (52, 13870773), (63, 11448892), (71, 10158876), (78, 9247182), (84, 8586669), (91, 7926156), (98, 7360002), (117, 6164788), (126, 5724446), (142, 5079438), (147, 4906668), (156, 4623591), (182, 3963078), (196, 3680001), (213, 3386292), (234, 3082394), (252, 2862223), (273, 2642052), (284, 2539719), (294, 2453334), (364, 1981539), (426, 1693146), (441, 1635556), (443, 1628172), (468, 1541197), (497, 1451268), (546, 1321026), (588, 1226667), (637, 1132308), (639, 1128764), (819, 880684), (852, 846573), (882, 817778), (886, 814086), (923, 781452), (994, 725634), (1092, 660513), (1274, 566154), (1278, 564382), (1329, 542724), (1491, 483756), (1638, 440342), (1764, 408889), (1772, 407043), (1846, 390726), (1911, 377436), (1988, 362817), (2548, 283077), (2556, 282191), (2658, 271362), (2769, 260484), (2982, 241878), (3101, 232596), (3276, 220171), (3479, 207324), (3692, 195363), (3822, 188718), (3987, 180908), (4473, 161252), (5316, 135681), (5538, 130242), (5733, 125812), (5759, 125244), (5964, 120939), (6202, 116298), (6461, 111636), (6958, 103662), (7644, 94359), (7974, 90454), (8307, 86828), (8946, 80626), (9303, 77532), (10437, 69108), (11076, 65121), (11466, 62906), (11518, 62622), (12404, 58149), (12922, 55818), (13916, 51831), (15948, 45227), (16614, 43414), (17277, 41748), (17892, 40313), (18606, 38766), (19383, 37212), (20874, 34554), (21707, 33228), (22932, 31453), (23036, 31311), (25844, 27909)]