21538564

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{283}}^1\times {\mathrm{359}}^1$

素因数の和:699

約数の個数: 24

約数和(自身を含む): 38646720

約数和(自身を除く): 17108156

約数列:

[1, 2, 4, 53, 106, 212, 283, 359, 566, 718, 1132, 1436, 14999, 19027, 29998, 38054, 59996, 76108, 101597, 203194, 406388, 5384641, 10769282, 21538564]

約数ペア:

[(1, 21538564), (2, 10769282), (4, 5384641), (53, 406388), (106, 203194), (212, 101597), (283, 76108), (359, 59996), (566, 38054), (718, 29998), (1132, 19027), (1436, 14999)]