20979616

素因数分解:

$2^5\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1283}}^1$

素因数の和:1373

約数の個数: 48

約数和(自身を含む): 47888064

約数和(自身を除く): 26908448

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 73, 112, 146, 224, 292, 511, 584, 1022, 1168, 1283, 2044, 2336, 2566, 4088, 5132, 8176, 8981, 10264, 16352, 17962, 20528, 35924, 41056, 71848, 93659, 143696, 187318, 287392, 374636, 655613, 749272, 1311226, 1498544, 2622452, 2997088, 5244904, 10489808, 20979616]

約数ペア:

[(1, 20979616), (2, 10489808), (4, 5244904), (7, 2997088), (8, 2622452), (14, 1498544), (16, 1311226), (28, 749272), (32, 655613), (56, 374636), (73, 287392), (112, 187318), (146, 143696), (224, 93659), (292, 71848), (511, 41056), (584, 35924), (1022, 20528), (1168, 17962), (1283, 16352), (2044, 10264), (2336, 8981), (2566, 8176), (4088, 5132)]