21397376

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1$

素因数の和:212

約数の個数: 128

約数和(自身を含む): 57576960

約数和(自身を除く): 36179584

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 64, 77, 88, 91, 104, 112, 128, 143, 154, 167, 176, 182, 208, 224, 286, 308, 334, 352, 364, 416, 448, 572, 616, 668, 704, 728, 832, 896, 1001, 1144, 1169, 1232, 1336, 1408, 1456, 1664, 1837, 2002, 2171, 2288, 2338, 2464, 2672, 2912, 3674, 4004, 4342, 4576, 4676, 4928, 5344, 5824, 7348, 8008, 8684, 9152, 9352, 9856, 10688, 11648, 12859, 14696, 15197, 16016, 17368, 18304, 18704, 21376, 23881, 25718, 29392, 30394, 32032, 34736, 37408, 47762, 51436, 58784, 60788, 64064, 69472, 74816, 95524, 102872, 117568, 121576, 128128, 138944, 149632, 167167, 191048, 205744, 235136, 243152, 277888, 334334, 382096, 411488, 486304, 668668, 764192, 822976, 972608, 1337336, 1528384, 1645952, 1945216, 2674672, 3056768, 5349344, 10698688, 21397376]

約数ペア:

[(1, 21397376), (2, 10698688), (4, 5349344), (7, 3056768), (8, 2674672), (11, 1945216), (13, 1645952), (14, 1528384), (16, 1337336), (22, 972608), (26, 822976), (28, 764192), (32, 668668), (44, 486304), (52, 411488), (56, 382096), (64, 334334), (77, 277888), (88, 243152), (91, 235136), (104, 205744), (112, 191048), (128, 167167), (143, 149632), (154, 138944), (167, 128128), (176, 121576), (182, 117568), (208, 102872), (224, 95524), (286, 74816), (308, 69472), (334, 64064), (352, 60788), (364, 58784), (416, 51436), (448, 47762), (572, 37408), (616, 34736), (668, 32032), (704, 30394), (728, 29392), (832, 25718), (896, 23881), (1001, 21376), (1144, 18704), (1169, 18304), (1232, 17368), (1336, 16016), (1408, 15197), (1456, 14696), (1664, 12859), (1837, 11648), (2002, 10688), (2171, 9856), (2288, 9352), (2338, 9152), (2464, 8684), (2672, 8008), (2912, 7348), (3674, 5824), (4004, 5344), (4342, 4928), (4576, 4676)]