21125940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32009}}^1$

素因数の和:32032

約数の個数: 48

約数和(自身を含む): 64532160

約数和(自身を除く): 43406220

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 32009, 64018, 96027, 128036, 160045, 192054, 320090, 352099, 384108, 480135, 640180, 704198, 960270, 1056297, 1408396, 1760495, 1920540, 2112594, 3520990, 4225188, 5281485, 7041980, 10562970, 21125940]

約数ペア:

[(1, 21125940), (2, 10562970), (3, 7041980), (4, 5281485), (5, 4225188), (6, 3520990), (10, 2112594), (11, 1920540), (12, 1760495), (15, 1408396), (20, 1056297), (22, 960270), (30, 704198), (33, 640180), (44, 480135), (55, 384108), (60, 352099), (66, 320090), (110, 192054), (132, 160045), (165, 128036), (220, 96027), (330, 64018), (660, 32009)]