19979254

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{1049}}^1$

素因数の和:1247

約数の個数: 16

約数和(自身を含む): 30618000

約数和(自身を除く): 10638746

約数列:

[1, 2, 89, 107, 178, 214, 1049, 2098, 9523, 19046, 93361, 112243, 186722, 224486, 9989627, 19979254]

約数ペア:

[(1, 19979254), (2, 9989627), (89, 224486), (107, 186722), (178, 112243), (214, 93361), (1049, 19046), (2098, 9523)]