21509448

素因数分解:

$2^3\times 3^1\times {\mathrm{691}}^1\times {\mathrm{1297}}^1$

素因数の和:1997

約数の個数: 32

約数和(自身を含む): 53892960

約数和(自身を除く): 32383512

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 691, 1297, 1382, 2073, 2594, 2764, 3891, 4146, 5188, 5528, 7782, 8292, 10376, 15564, 16584, 31128, 896227, 1792454, 2688681, 3584908, 5377362, 7169816, 10754724, 21509448]

約数ペア:

[(1, 21509448), (2, 10754724), (3, 7169816), (4, 5377362), (6, 3584908), (8, 2688681), (12, 1792454), (24, 896227), (691, 31128), (1297, 16584), (1382, 15564), (2073, 10376), (2594, 8292), (2764, 7782), (3891, 5528), (4146, 5188)]