21378816

素因数分解:

$2^8\times 3^4\times {\mathrm{1031}}^1$

素因数の和:1059

約数の個数: 90

約数和(自身を含む): 63809592

約数和(自身を除く): 42430776

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 81, 96, 108, 128, 144, 162, 192, 216, 256, 288, 324, 384, 432, 576, 648, 768, 864, 1031, 1152, 1296, 1728, 2062, 2304, 2592, 3093, 3456, 4124, 5184, 6186, 6912, 8248, 9279, 10368, 12372, 16496, 18558, 20736, 24744, 27837, 32992, 37116, 49488, 55674, 65984, 74232, 83511, 98976, 111348, 131968, 148464, 167022, 197952, 222696, 263936, 296928, 334044, 395904, 445392, 593856, 668088, 791808, 890784, 1187712, 1336176, 1781568, 2375424, 2672352, 3563136, 5344704, 7126272, 10689408, 21378816]

約数ペア:

[(1, 21378816), (2, 10689408), (3, 7126272), (4, 5344704), (6, 3563136), (8, 2672352), (9, 2375424), (12, 1781568), (16, 1336176), (18, 1187712), (24, 890784), (27, 791808), (32, 668088), (36, 593856), (48, 445392), (54, 395904), (64, 334044), (72, 296928), (81, 263936), (96, 222696), (108, 197952), (128, 167022), (144, 148464), (162, 131968), (192, 111348), (216, 98976), (256, 83511), (288, 74232), (324, 65984), (384, 55674), (432, 49488), (576, 37116), (648, 32992), (768, 27837), (864, 24744), (1031, 20736), (1152, 18558), (1296, 16496), (1728, 12372), (2062, 10368), (2304, 9279), (2592, 8248), (3093, 6912), (3456, 6186), (4124, 5184)]