20078638

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{5309}}^1$

素因数の和:5403

約数の個数: 16

約数和(自身を含む): 31605120

約数和(自身を除く): 11526482

約数列:

[1, 2, 31, 61, 62, 122, 1891, 3782, 5309, 10618, 164579, 323849, 329158, 647698, 10039319, 20078638]

約数ペア:

[(1, 20078638), (2, 10039319), (31, 647698), (61, 329158), (62, 323849), (122, 164579), (1891, 10618), (3782, 5309)]