21056256

素因数分解:

$2^8\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:91

約数の個数: 216

約数和(自身を含む): 70681520

約数和(自身を除く): 49625264

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 32, 36, 37, 38, 39, 48, 52, 57, 64, 72, 74, 76, 78, 96, 104, 111, 114, 117, 128, 144, 148, 152, 156, 171, 192, 208, 222, 228, 234, 247, 256, 288, 296, 304, 312, 333, 342, 384, 416, 444, 456, 468, 481, 494, 576, 592, 608, 624, 666, 684, 703, 741, 768, 832, 888, 912, 936, 962, 988, 1152, 1184, 1216, 1248, 1332, 1368, 1406, 1443, 1482, 1664, 1776, 1824, 1872, 1924, 1976, 2109, 2223, 2304, 2368, 2432, 2496, 2664, 2736, 2812, 2886, 2964, 3328, 3552, 3648, 3744, 3848, 3952, 4218, 4329, 4446, 4736, 4864, 4992, 5328, 5472, 5624, 5772, 5928, 6327, 7104, 7296, 7488, 7696, 7904, 8436, 8658, 8892, 9139, 9472, 9984, 10656, 10944, 11248, 11544, 11856, 12654, 14208, 14592, 14976, 15392, 15808, 16872, 17316, 17784, 18278, 21312, 21888, 22496, 23088, 23712, 25308, 27417, 28416, 29952, 30784, 31616, 33744, 34632, 35568, 36556, 42624, 43776, 44992, 46176, 47424, 50616, 54834, 61568, 63232, 67488, 69264, 71136, 73112, 82251, 85248, 89984, 92352, 94848, 101232, 109668, 123136, 134976, 138528, 142272, 146224, 164502, 179968, 184704, 189696, 202464, 219336, 269952, 277056, 284544, 292448, 329004, 369408, 404928, 438672, 539904, 554112, 569088, 584896, 658008, 809856, 877344, 1108224, 1169792, 1316016, 1619712, 1754688, 2339584, 2632032, 3509376, 5264064, 7018752, 10528128, 21056256]

約数ペア:

[(1, 21056256), (2, 10528128), (3, 7018752), (4, 5264064), (6, 3509376), (8, 2632032), (9, 2339584), (12, 1754688), (13, 1619712), (16, 1316016), (18, 1169792), (19, 1108224), (24, 877344), (26, 809856), (32, 658008), (36, 584896), (37, 569088), (38, 554112), (39, 539904), (48, 438672), (52, 404928), (57, 369408), (64, 329004), (72, 292448), (74, 284544), (76, 277056), (78, 269952), (96, 219336), (104, 202464), (111, 189696), (114, 184704), (117, 179968), (128, 164502), (144, 146224), (148, 142272), (152, 138528), (156, 134976), (171, 123136), (192, 109668), (208, 101232), (222, 94848), (228, 92352), (234, 89984), (247, 85248), (256, 82251), (288, 73112), (296, 71136), (304, 69264), (312, 67488), (333, 63232), (342, 61568), (384, 54834), (416, 50616), (444, 47424), (456, 46176), (468, 44992), (481, 43776), (494, 42624), (576, 36556), (592, 35568), (608, 34632), (624, 33744), (666, 31616), (684, 30784), (703, 29952), (741, 28416), (768, 27417), (832, 25308), (888, 23712), (912, 23088), (936, 22496), (962, 21888), (988, 21312), (1152, 18278), (1184, 17784), (1216, 17316), (1248, 16872), (1332, 15808), (1368, 15392), (1406, 14976), (1443, 14592), (1482, 14208), (1664, 12654), (1776, 11856), (1824, 11544), (1872, 11248), (1924, 10944), (1976, 10656), (2109, 9984), (2223, 9472), (2304, 9139), (2368, 8892), (2432, 8658), (2496, 8436), (2664, 7904), (2736, 7696), (2812, 7488), (2886, 7296), (2964, 7104), (3328, 6327), (3552, 5928), (3648, 5772), (3744, 5624), (3848, 5472), (3952, 5328), (4218, 4992), (4329, 4864), (4446, 4736)]