21209664

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:432

約数の個数: 112

約数和(自身を含む): 65804288

約数和(自身を除く): 44594624

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 43, 48, 56, 64, 84, 86, 96, 112, 129, 168, 172, 192, 224, 258, 301, 336, 344, 367, 448, 516, 602, 672, 688, 734, 903, 1032, 1101, 1204, 1344, 1376, 1468, 1806, 2064, 2202, 2408, 2569, 2752, 2936, 3612, 4128, 4404, 4816, 5138, 5872, 7224, 7707, 8256, 8808, 9632, 10276, 11744, 14448, 15414, 15781, 17616, 19264, 20552, 23488, 28896, 30828, 31562, 35232, 41104, 47343, 57792, 61656, 63124, 70464, 82208, 94686, 110467, 123312, 126248, 164416, 189372, 220934, 246624, 252496, 331401, 378744, 441868, 493248, 504992, 662802, 757488, 883736, 1009984, 1325604, 1514976, 1767472, 2651208, 3029952, 3534944, 5302416, 7069888, 10604832, 21209664]

約数ペア:

[(1, 21209664), (2, 10604832), (3, 7069888), (4, 5302416), (6, 3534944), (7, 3029952), (8, 2651208), (12, 1767472), (14, 1514976), (16, 1325604), (21, 1009984), (24, 883736), (28, 757488), (32, 662802), (42, 504992), (43, 493248), (48, 441868), (56, 378744), (64, 331401), (84, 252496), (86, 246624), (96, 220934), (112, 189372), (129, 164416), (168, 126248), (172, 123312), (192, 110467), (224, 94686), (258, 82208), (301, 70464), (336, 63124), (344, 61656), (367, 57792), (448, 47343), (516, 41104), (602, 35232), (672, 31562), (688, 30828), (734, 28896), (903, 23488), (1032, 20552), (1101, 19264), (1204, 17616), (1344, 15781), (1376, 15414), (1468, 14448), (1806, 11744), (2064, 10276), (2202, 9632), (2408, 8808), (2569, 8256), (2752, 7707), (2936, 7224), (3612, 5872), (4128, 5138), (4404, 4816)]