20728917

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5659}}^1$

素因数の和:5713

約数の個数: 24

約数和(自身を含む): 33552480

約数和(自身を除く): 12823563

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 1221, 3663, 5659, 16977, 50931, 62249, 186747, 209383, 560241, 628149, 1884447, 2303213, 6909639, 20728917]

約数ペア:

[(1, 20728917), (3, 6909639), (9, 2303213), (11, 1884447), (33, 628149), (37, 560241), (99, 209383), (111, 186747), (333, 62249), (407, 50931), (1221, 16977), (3663, 5659)]