21079504

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42499}}^1$

素因数の和:42538

約数の個数: 20

約数和(自身を含む): 42160000

約数和(自身を除く): 21080496

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42499, 84998, 169996, 339992, 679984, 1317469, 2634938, 5269876, 10539752, 21079504]

約数ペア:

[(1, 21079504), (2, 10539752), (4, 5269876), (8, 2634938), (16, 1317469), (31, 679984), (62, 339992), (124, 169996), (248, 84998), (496, 42499)]