21380504

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 41163120

約数和(自身を除く): 19782616

約数列:

[1, 2, 4, 8, 67, 113, 134, 226, 268, 353, 452, 536, 706, 904, 1412, 2824, 7571, 15142, 23651, 30284, 39889, 47302, 60568, 79778, 94604, 159556, 189208, 319112, 2672563, 5345126, 10690252, 21380504]

約数ペア:

[(1, 21380504), (2, 10690252), (4, 5345126), (8, 2672563), (67, 319112), (113, 189208), (134, 159556), (226, 94604), (268, 79778), (353, 60568), (452, 47302), (536, 39889), (706, 30284), (904, 23651), (1412, 15142), (2824, 7571)]