21335288

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{757}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 43296960

約数和(自身を除く): 21961672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 271, 542, 757, 1084, 1514, 2168, 3028, 3523, 6056, 7046, 9841, 14092, 19682, 28184, 39364, 78728, 205147, 410294, 820588, 1641176, 2666911, 5333822, 10667644, 21335288]

約数ペア:

[(1, 21335288), (2, 10667644), (4, 5333822), (8, 2666911), (13, 1641176), (26, 820588), (52, 410294), (104, 205147), (271, 78728), (542, 39364), (757, 28184), (1084, 19682), (1514, 14092), (2168, 9841), (3028, 7046), (3523, 6056)]