21239504

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9283}}^1$

素因数の和:9315

約数の個数: 40

約数和(自身を含む): 48351072

約数和(自身を除く): 27111568

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 143, 176, 208, 286, 572, 1144, 2288, 9283, 18566, 37132, 74264, 102113, 120679, 148528, 204226, 241358, 408452, 482716, 816904, 965432, 1327469, 1633808, 1930864, 2654938, 5309876, 10619752, 21239504]

約数ペア:

[(1, 21239504), (2, 10619752), (4, 5309876), (8, 2654938), (11, 1930864), (13, 1633808), (16, 1327469), (22, 965432), (26, 816904), (44, 482716), (52, 408452), (88, 241358), (104, 204226), (143, 148528), (176, 120679), (208, 102113), (286, 74264), (572, 37132), (1144, 18566), (2288, 9283)]