20979710

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 38761632

約数和(自身を除く): 17781922

約数列:

[1, 2, 5, 10, 67, 134, 173, 181, 335, 346, 362, 670, 865, 905, 1730, 1810, 11591, 12127, 23182, 24254, 31313, 57955, 60635, 62626, 115910, 121270, 156565, 313130, 2097971, 4195942, 10489855, 20979710]

約数ペア:

[(1, 20979710), (2, 10489855), (5, 4195942), (10, 2097971), (67, 313130), (134, 156565), (173, 121270), (181, 115910), (335, 62626), (346, 60635), (362, 57955), (670, 31313), (865, 24254), (905, 23182), (1730, 12127), (1810, 11591)]