21306656

素因数分解:

$2^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1303}}^1$

素因数の和:1393

約数の個数: 48

約数和(自身を含む): 48633984

約数和(自身を除く): 27327328

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 73, 112, 146, 224, 292, 511, 584, 1022, 1168, 1303, 2044, 2336, 2606, 4088, 5212, 8176, 9121, 10424, 16352, 18242, 20848, 36484, 41696, 72968, 95119, 145936, 190238, 291872, 380476, 665833, 760952, 1331666, 1521904, 2663332, 3043808, 5326664, 10653328, 21306656]

約数ペア:

[(1, 21306656), (2, 10653328), (4, 5326664), (7, 3043808), (8, 2663332), (14, 1521904), (16, 1331666), (28, 760952), (32, 665833), (56, 380476), (73, 291872), (112, 190238), (146, 145936), (224, 95119), (292, 72968), (511, 41696), (584, 36484), (1022, 20848), (1168, 18242), (1303, 16352), (2044, 10424), (2336, 9121), (2606, 8176), (4088, 5212)]