21437816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{283}}^1\times {\mathrm{557}}^1$

素因数の和:863

約数の個数: 32

約数和(自身を含む): 42787440

約数和(自身を除く): 21349624

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 283, 557, 566, 1114, 1132, 2228, 2264, 4456, 4811, 9469, 9622, 18938, 19244, 37876, 38488, 75752, 157631, 315262, 630524, 1261048, 2679727, 5359454, 10718908, 21437816]

約数ペア:

[(1, 21437816), (2, 10718908), (4, 5359454), (8, 2679727), (17, 1261048), (34, 630524), (68, 315262), (136, 157631), (283, 75752), (557, 38488), (566, 37876), (1114, 19244), (1132, 18938), (2228, 9622), (2264, 9469), (4456, 4811)]