21099555

素因数分解:

$3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2141}}^1$

素因数の和:2228

約数の個数: 32

約数和(自身を含む): 38041920

約数和(自身を除く): 16942365

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 135, 219, 365, 657, 1095, 1971, 2141, 3285, 6423, 9855, 10705, 19269, 32115, 57807, 96345, 156293, 289035, 468879, 781465, 1406637, 2344395, 4219911, 7033185, 21099555]

約数ペア:

[(1, 21099555), (3, 7033185), (5, 4219911), (9, 2344395), (15, 1406637), (27, 781465), (45, 468879), (73, 289035), (135, 156293), (219, 96345), (365, 57807), (657, 32115), (1095, 19269), (1971, 10705), (2141, 9855), (3285, 6423)]