21390426

素因数分解:

$2^1\times 3^3\times {\mathrm{396119}}^1$

素因数の和:396130

約数の個数: 16

約数和(自身を含む): 47534400

約数和(自身を除く): 26143974

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 396119, 792238, 1188357, 2376714, 3565071, 7130142, 10695213, 21390426]

約数ペア:

[(1, 21390426), (2, 10695213), (3, 7130142), (6, 3565071), (9, 2376714), (18, 1188357), (27, 792238), (54, 396119)]