21242169

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20173}}^1$

素因数の和:20198

約数の個数: 20

約数和(自身を含む): 34174756

約数和(自身を除く): 12932587

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20173, 60519, 181557, 262249, 544671, 786747, 1634013, 2360241, 7080723, 21242169]

約数ペア:

[(1, 21242169), (3, 7080723), (9, 2360241), (13, 1634013), (27, 786747), (39, 544671), (81, 262249), (117, 181557), (351, 60519), (1053, 20173)]