21543388

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{2447}}^1$

素因数の和:2553

約数の個数: 24

約数和(自身を含む): 39481344

約数和(自身を除く): 17937956

約数列:

[1, 2, 4, 31, 62, 71, 124, 142, 284, 2201, 2447, 4402, 4894, 8804, 9788, 75857, 151714, 173737, 303428, 347474, 694948, 5385847, 10771694, 21543388]

約数ペア:

[(1, 21543388), (2, 10771694), (4, 5385847), (31, 694948), (62, 347474), (71, 303428), (124, 173737), (142, 151714), (284, 75857), (2201, 9788), (2447, 8804), (4402, 4894)]