21640128

素因数分解:

$2^6\times 3^1\times {\mathrm{41}}^1\times {\mathrm{2749}}^1$

素因数の和:2805

約数の個数: 56

約数和(自身を含む): 58674000

約数和(自身を除く): 37033872

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 41, 48, 64, 82, 96, 123, 164, 192, 246, 328, 492, 656, 984, 1312, 1968, 2624, 2749, 3936, 5498, 7872, 8247, 10996, 16494, 21992, 32988, 43984, 65976, 87968, 112709, 131952, 175936, 225418, 263904, 338127, 450836, 527808, 676254, 901672, 1352508, 1803344, 2705016, 3606688, 5410032, 7213376, 10820064, 21640128]

約数ペア:

[(1, 21640128), (2, 10820064), (3, 7213376), (4, 5410032), (6, 3606688), (8, 2705016), (12, 1803344), (16, 1352508), (24, 901672), (32, 676254), (41, 527808), (48, 450836), (64, 338127), (82, 263904), (96, 225418), (123, 175936), (164, 131952), (192, 112709), (246, 87968), (328, 65976), (492, 43984), (656, 32988), (984, 21992), (1312, 16494), (1968, 10996), (2624, 8247), (2749, 7872), (3936, 5498)]