20217538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{8431}}^1$

素因数の和:8553

約数の個数: 16

約数和(自身を含む): 33390720

約数和(自身を除く): 13173182

約数列:

[1, 2, 11, 22, 109, 218, 1199, 2398, 8431, 16862, 92741, 185482, 918979, 1837958, 10108769, 20217538]

約数ペア:

[(1, 20217538), (2, 10108769), (11, 1837958), (22, 918979), (109, 185482), (218, 92741), (1199, 16862), (2398, 8431)]