21254688

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:847

約数の個数: 144

約数和(自身を含む): 74483136

約数和(自身を除く): 53228448

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 32, 36, 39, 42, 48, 52, 56, 63, 72, 78, 84, 91, 96, 104, 112, 117, 126, 144, 156, 168, 182, 208, 224, 234, 252, 273, 288, 312, 336, 364, 416, 468, 504, 546, 624, 672, 728, 811, 819, 936, 1008, 1092, 1248, 1456, 1622, 1638, 1872, 2016, 2184, 2433, 2912, 3244, 3276, 3744, 4368, 4866, 5677, 6488, 6552, 7299, 8736, 9732, 10543, 11354, 12976, 13104, 14598, 17031, 19464, 21086, 22708, 25952, 26208, 29196, 31629, 34062, 38928, 42172, 45416, 51093, 58392, 63258, 68124, 73801, 77856, 84344, 90832, 94887, 102186, 116784, 126516, 136248, 147602, 168688, 181664, 189774, 204372, 221403, 233568, 253032, 272496, 295204, 337376, 379548, 408744, 442806, 506064, 544992, 590408, 664209, 759096, 817488, 885612, 1012128, 1180816, 1328418, 1518192, 1634976, 1771224, 2361632, 2656836, 3036384, 3542448, 5313672, 7084896, 10627344, 21254688]

約数ペア:

[(1, 21254688), (2, 10627344), (3, 7084896), (4, 5313672), (6, 3542448), (7, 3036384), (8, 2656836), (9, 2361632), (12, 1771224), (13, 1634976), (14, 1518192), (16, 1328418), (18, 1180816), (21, 1012128), (24, 885612), (26, 817488), (28, 759096), (32, 664209), (36, 590408), (39, 544992), (42, 506064), (48, 442806), (52, 408744), (56, 379548), (63, 337376), (72, 295204), (78, 272496), (84, 253032), (91, 233568), (96, 221403), (104, 204372), (112, 189774), (117, 181664), (126, 168688), (144, 147602), (156, 136248), (168, 126516), (182, 116784), (208, 102186), (224, 94887), (234, 90832), (252, 84344), (273, 77856), (288, 73801), (312, 68124), (336, 63258), (364, 58392), (416, 51093), (468, 45416), (504, 42172), (546, 38928), (624, 34062), (672, 31629), (728, 29196), (811, 26208), (819, 25952), (936, 22708), (1008, 21086), (1092, 19464), (1248, 17031), (1456, 14598), (1622, 13104), (1638, 12976), (1872, 11354), (2016, 10543), (2184, 9732), (2433, 8736), (2912, 7299), (3244, 6552), (3276, 6488), (3744, 5677), (4368, 4866)]