21268278

素因数分解:

$2^1\times 3^3\times {\mathrm{393857}}^1$

素因数の和:393868

約数の個数: 16

約数和(自身を含む): 47262960

約数和(自身を除く): 25994682

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393857, 787714, 1181571, 2363142, 3544713, 7089426, 10634139, 21268278]

約数ペア:

[(1, 21268278), (2, 10634139), (3, 7089426), (6, 3544713), (9, 2363142), (18, 1181571), (27, 787714), (54, 393857)]