21403776

素因数分解:

$2^7\times 3^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:557

約数の個数: 64

約数和(自身を含む): 57405600

約数和(自身を除く): 36001824

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 139, 192, 278, 384, 401, 417, 556, 802, 834, 1112, 1203, 1604, 1668, 2224, 2406, 3208, 3336, 4448, 4812, 6416, 6672, 8896, 9624, 12832, 13344, 17792, 19248, 25664, 26688, 38496, 51328, 53376, 55739, 76992, 111478, 153984, 167217, 222956, 334434, 445912, 668868, 891824, 1337736, 1783648, 2675472, 3567296, 5350944, 7134592, 10701888, 21403776]

約数ペア:

[(1, 21403776), (2, 10701888), (3, 7134592), (4, 5350944), (6, 3567296), (8, 2675472), (12, 1783648), (16, 1337736), (24, 891824), (32, 668868), (48, 445912), (64, 334434), (96, 222956), (128, 167217), (139, 153984), (192, 111478), (278, 76992), (384, 55739), (401, 53376), (417, 51328), (556, 38496), (802, 26688), (834, 25664), (1112, 19248), (1203, 17792), (1604, 13344), (1668, 12832), (2224, 9624), (2406, 8896), (3208, 6672), (3336, 6416), (4448, 4812)]