21284757

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1669}}^1$

素因数の和:1797

約数の個数: 24

約数和(自身を含む): 33433400

約数和(自身を除く): 12148643

約数列:

[1, 3, 9, 13, 39, 109, 117, 327, 981, 1417, 1669, 4251, 5007, 12753, 15021, 21697, 65091, 181921, 195273, 545763, 1637289, 2364973, 7094919, 21284757]

約数ペア:

[(1, 21284757), (3, 7094919), (9, 2364973), (13, 1637289), (39, 545763), (109, 195273), (117, 181921), (327, 65091), (981, 21697), (1417, 15021), (1669, 12753), (4251, 5007)]