21728324

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7727}}^1$

素因数の和:7787

約数の個数: 24

約数和(自身を含む): 41112960

約数和(自身を除く): 19384636

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7727, 15454, 30908, 146813, 285899, 293626, 571798, 587252, 1143596, 5432081, 10864162, 21728324]

約数ペア:

[(1, 21728324), (2, 10864162), (4, 5432081), (19, 1143596), (37, 587252), (38, 571798), (74, 293626), (76, 285899), (148, 146813), (703, 30908), (1406, 15454), (2812, 7727)]