21051495

素因数分解:

$3^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{881}}^1$

素因数の和:957

約数の個数: 40

約数和(自身を含む): 38419920

約数和(自身を除く): 17368425

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 81, 135, 177, 295, 405, 531, 881, 885, 1593, 2643, 2655, 4405, 4779, 7929, 7965, 13215, 23787, 23895, 39645, 51979, 71361, 118935, 155937, 259895, 356805, 467811, 779685, 1403433, 2339055, 4210299, 7017165, 21051495]

約数ペア:

[(1, 21051495), (3, 7017165), (5, 4210299), (9, 2339055), (15, 1403433), (27, 779685), (45, 467811), (59, 356805), (81, 259895), (135, 155937), (177, 118935), (295, 71361), (405, 51979), (531, 39645), (881, 23895), (885, 23787), (1593, 13215), (2643, 7965), (2655, 7929), (4405, 4779)]