20899912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{541}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 42926400

約数和(自身を除く): 22026488

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 439, 541, 878, 1082, 1756, 2164, 3512, 4328, 4829, 5951, 9658, 11902, 19316, 23804, 38632, 47608, 237499, 474998, 949996, 1899992, 2612489, 5224978, 10449956, 20899912]

約数ペア:

[(1, 20899912), (2, 10449956), (4, 5224978), (8, 2612489), (11, 1899992), (22, 949996), (44, 474998), (88, 237499), (439, 47608), (541, 38632), (878, 23804), (1082, 19316), (1756, 11902), (2164, 9658), (3512, 5951), (4328, 4829)]