19800513

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{613}}^1$

素因数の和:753

約数の個数: 24

約数和(自身を含む): 29724968

約数和(自身を除く): 9924455

約数列:

[1, 3, 9, 37, 97, 111, 291, 333, 613, 873, 1839, 3589, 5517, 10767, 22681, 32301, 59461, 68043, 178383, 204129, 535149, 2200057, 6600171, 19800513]

約数ペア:

[(1, 19800513), (3, 6600171), (9, 2200057), (37, 535149), (97, 204129), (111, 178383), (291, 68043), (333, 59461), (613, 32301), (873, 22681), (1839, 10767), (3589, 5517)]