20990464

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{3727}}^1$

素因数の和:3756

約数の個数: 40

約数和(自身を含む): 45764928

約数和(自身を除く): 24774464

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 512, 704, 1408, 2816, 3727, 5632, 7454, 14908, 29816, 40997, 59632, 81994, 119264, 163988, 238528, 327976, 477056, 655952, 954112, 1311904, 1908224, 2623808, 5247616, 10495232, 20990464]

約数ペア:

[(1, 20990464), (2, 10495232), (4, 5247616), (8, 2623808), (11, 1908224), (16, 1311904), (22, 954112), (32, 655952), (44, 477056), (64, 327976), (88, 238528), (128, 163988), (176, 119264), (256, 81994), (352, 59632), (512, 40997), (704, 29816), (1408, 14908), (2816, 7454), (3727, 5632)]