20347929

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2111}}^1$

素因数の和:2147

約数の個数: 40

約数和(自身を含む): 36799488

約数和(自身を除く): 16451559

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 357, 459, 567, 1071, 1377, 2111, 3213, 6333, 9639, 14777, 18999, 35887, 44331, 56997, 107661, 132993, 170991, 251209, 322983, 398979, 753627, 968949, 1196937, 2260881, 2906847, 6782643, 20347929]

約数ペア:

[(1, 20347929), (3, 6782643), (7, 2906847), (9, 2260881), (17, 1196937), (21, 968949), (27, 753627), (51, 398979), (63, 322983), (81, 251209), (119, 170991), (153, 132993), (189, 107661), (357, 56997), (459, 44331), (567, 35887), (1071, 18999), (1377, 14777), (2111, 9639), (3213, 6333)]