21439121

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 24105600

約数和(自身を除く): 2666479

約数列:

[1, 11, 61, 89, 359, 671, 979, 3949, 5429, 21899, 31951, 59719, 240889, 351461, 1949011, 21439121]

約数ペア:

[(1, 21439121), (11, 1949011), (61, 351461), (89, 240889), (359, 59719), (671, 31951), (979, 21899), (3949, 5429)]