21445976

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2221}}^1$

素因数の和:2315

約数の個数: 32

約数和(自身を含む): 43195680

約数和(自身を除く): 21749704

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 284, 568, 1207, 2221, 2414, 4442, 4828, 8884, 9656, 17768, 37757, 75514, 151028, 157691, 302056, 315382, 630764, 1261528, 2680747, 5361494, 10722988, 21445976]

約数ペア:

[(1, 21445976), (2, 10722988), (4, 5361494), (8, 2680747), (17, 1261528), (34, 630764), (68, 315382), (71, 302056), (136, 157691), (142, 151028), (284, 75514), (568, 37757), (1207, 17768), (2221, 9656), (2414, 8884), (4442, 4828)]