21000895461

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{6271}}^1$

素因数の和:6376

約数の個数: 128

約数和(自身を含む): 40461926400

約数和(自身を除く): 19461030939

約数列:

[1, 3, 7, 9, 13, 21, 27, 29, 39, 47, 63, 87, 91, 117, 141, 189, 203, 261, 273, 329, 351, 377, 423, 609, 611, 783, 819, 987, 1131, 1269, 1363, 1827, 1833, 2457, 2639, 2961, 3393, 4089, 4277, 5481, 5499, 6271, 7917, 8883, 9541, 10179, 12267, 12831, 16497, 17719, 18813, 23751, 28623, 36801, 38493, 43897, 53157, 56439, 71253, 81523, 85869, 115479, 124033, 131691, 159471, 169317, 181859, 244569, 257607, 294737, 372099, 395073, 478413, 545577, 570661, 733707, 884211, 1116297, 1185219, 1273013, 1636731, 1711983, 2063159, 2201121, 2364167, 2652633, 3348891, 3819039, 3831581, 4910193, 5135949, 6189477, 7092501, 7957899, 8547373, 11457117, 11494743, 15407847, 16549169, 18568431, 21277503, 25642119, 26821067, 34371351, 34484229, 49647507, 55705293, 59831611, 63832509, 76926357, 80463201, 103452687, 111115849, 148942521, 179494833, 230779071, 241389603, 333347547, 446827563, 538484499, 724168809, 777810943, 1000042641, 1615453497, 2333432829, 3000127923, 7000298487, 21000895461]

約数ペア:

[(1, 21000895461), (3, 7000298487), (7, 3000127923), (9, 2333432829), (13, 1615453497), (21, 1000042641), (27, 777810943), (29, 724168809), (39, 538484499), (47, 446827563), (63, 333347547), (87, 241389603), (91, 230779071), (117, 179494833), (141, 148942521), (189, 111115849), (203, 103452687), (261, 80463201), (273, 76926357), (329, 63832509), (351, 59831611), (377, 55705293), (423, 49647507), (609, 34484229), (611, 34371351), (783, 26821067), (819, 25642119), (987, 21277503), (1131, 18568431), (1269, 16549169), (1363, 15407847), (1827, 11494743), (1833, 11457117), (2457, 8547373), (2639, 7957899), (2961, 7092501), (3393, 6189477), (4089, 5135949), (4277, 4910193), (5481, 3831581), (5499, 3819039), (6271, 3348891), (7917, 2652633), (8883, 2364167), (9541, 2201121), (10179, 2063159), (12267, 1711983), (12831, 1636731), (16497, 1273013), (17719, 1185219), (18813, 1116297), (23751, 884211), (28623, 733707), (36801, 570661), (38493, 545577), (43897, 478413), (53157, 395073), (56439, 372099), (71253, 294737), (81523, 257607), (85869, 244569), (115479, 181859), (124033, 169317), (131691, 159471)]