21341788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21601}}^1$

素因数の和:21637

約数の個数: 24

約数和(自身を含む): 42339920

約数和(自身を除く): 20998132

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21601, 43202, 86404, 280813, 410419, 561626, 820838, 1123252, 1641676, 5335447, 10670894, 21341788]

約数ペア:

[(1, 21341788), (2, 10670894), (4, 5335447), (13, 1641676), (19, 1123252), (26, 820838), (38, 561626), (52, 410419), (76, 280813), (247, 86404), (494, 43202), (988, 21601)]