21584955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{661}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 39656448

約数和(自身を除く): 18071493

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 311, 661, 933, 1555, 1983, 2177, 3305, 4627, 4665, 6531, 9915, 10885, 13881, 23135, 32655, 69405, 205571, 616713, 1027855, 1438997, 3083565, 4316991, 7194985, 21584955]

約数ペア:

[(1, 21584955), (3, 7194985), (5, 4316991), (7, 3083565), (15, 1438997), (21, 1027855), (35, 616713), (105, 205571), (311, 69405), (661, 32655), (933, 23135), (1555, 13881), (1983, 10885), (2177, 9915), (3305, 6531), (4627, 4665)]