21080142

素因数分解:

$2^1\times 3^3\times {\mathrm{390373}}^1$

素因数の和:390384

約数の個数: 16

約数和(自身を含む): 46844880

約数和(自身を除く): 25764738

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 390373, 780746, 1171119, 2342238, 3513357, 7026714, 10540071, 21080142]

約数ペア:

[(1, 21080142), (2, 10540071), (3, 7026714), (6, 3513357), (9, 2342238), (18, 1171119), (27, 780746), (54, 390373)]