21004398

素因数分解:

$2^1\times 3^2\times {\mathrm{653}}^1\times {\mathrm{1787}}^1$

素因数の和:2448

約数の個数: 24

約数和(自身を含む): 45604728

約数和(自身を除く): 24600330

約数列:

[1, 2, 3, 6, 9, 18, 653, 1306, 1787, 1959, 3574, 3918, 5361, 5877, 10722, 11754, 16083, 32166, 1166911, 2333822, 3500733, 7001466, 10502199, 21004398]

約数ペア:

[(1, 21004398), (2, 10502199), (3, 7001466), (6, 3500733), (9, 2333822), (18, 1166911), (653, 32166), (1306, 16083), (1787, 11754), (1959, 10722), (3574, 5877), (3918, 5361)]