21299912

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8243}}^1$

素因数の和:8285

約数の個数: 32

約数和(自身を含む): 44517600

約数和(自身を除く): 23217688

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8243, 16486, 32972, 65944, 140131, 156617, 280262, 313234, 560524, 626468, 1121048, 1252936, 2662489, 5324978, 10649956, 21299912]

約数ペア:

[(1, 21299912), (2, 10649956), (4, 5324978), (8, 2662489), (17, 1252936), (19, 1121048), (34, 626468), (38, 560524), (68, 313234), (76, 280262), (136, 156617), (152, 140131), (323, 65944), (646, 32972), (1292, 16486), (2584, 8243)]