19915313

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{379}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 23146560

約数和(自身を除く): 3231247

約数列:

[1, 11, 17, 187, 281, 379, 3091, 4169, 4777, 6443, 52547, 70873, 106499, 1171489, 1810483, 19915313]

約数ペア:

[(1, 19915313), (11, 1810483), (17, 1171489), (187, 106499), (281, 70873), (379, 52547), (3091, 6443), (4169, 4777)]