19879209

素因数分解:

$3^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{983}}^1$

素因数の和:1106

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 14127831

約数列:

[1, 3, 7, 9, 21, 27, 63, 107, 189, 321, 749, 963, 983, 2247, 2889, 2949, 6741, 6881, 8847, 20223, 20643, 26541, 61929, 105181, 185787, 315543, 736267, 946629, 2208801, 2839887, 6626403, 19879209]

約数ペア:

[(1, 19879209), (3, 6626403), (7, 2839887), (9, 2208801), (21, 946629), (27, 736267), (63, 315543), (107, 185787), (189, 105181), (321, 61929), (749, 26541), (963, 20643), (983, 20223), (2247, 8847), (2889, 6881), (2949, 6741)]