21197561

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4513}}^1$

素因数の和:4592

約数の個数: 16

約数和(自身を含む): 26867328

約数和(自身を除く): 5669767

約数列:

[1, 7, 11, 61, 77, 427, 671, 4513, 4697, 31591, 49643, 275293, 347501, 1927051, 3028223, 21197561]

約数ペア:

[(1, 21197561), (7, 3028223), (11, 1927051), (61, 347501), (77, 275293), (427, 49643), (671, 31591), (4513, 4697)]