20937555

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5003}}^1$

素因数の和:5048

約数の個数: 32

約数和(自身を含む): 38430720

約数和(自身を除く): 17493165

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 5003, 15009, 25015, 45027, 75045, 135081, 155093, 225135, 465279, 675405, 775465, 1395837, 2326395, 4187511, 6979185, 20937555]

約数ペア:

[(1, 20937555), (3, 6979185), (5, 4187511), (9, 2326395), (15, 1395837), (27, 775465), (31, 675405), (45, 465279), (93, 225135), (135, 155093), (155, 135081), (279, 75045), (465, 45027), (837, 25015), (1395, 15009), (4185, 5003)]