19727290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{131}}^1$

素因数の和:223

約数の個数: 48

約数和(自身を含む): 40116384

約数和(自身を除く): 20389094

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 74, 110, 131, 185, 262, 370, 407, 655, 814, 1310, 1369, 1441, 2035, 2738, 2882, 4070, 4847, 6845, 7205, 9694, 13690, 14410, 15059, 24235, 30118, 48470, 53317, 75295, 106634, 150590, 179339, 266585, 358678, 533170, 896695, 1793390, 1972729, 3945458, 9863645, 19727290]

約数ペア:

[(1, 19727290), (2, 9863645), (5, 3945458), (10, 1972729), (11, 1793390), (22, 896695), (37, 533170), (55, 358678), (74, 266585), (110, 179339), (131, 150590), (185, 106634), (262, 75295), (370, 53317), (407, 48470), (655, 30118), (814, 24235), (1310, 15059), (1369, 14410), (1441, 13690), (2035, 9694), (2738, 7205), (2882, 6845), (4070, 4847)]