20406915

素因数分解:

$3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1033}}^1$

素因数の和:1483

約数の個数: 24

約数和(自身を含む): 35486880

約数和(自身を除く): 15079965

約数列:

[1, 3, 5, 9, 15, 45, 439, 1033, 1317, 2195, 3099, 3951, 5165, 6585, 9297, 15495, 19755, 46485, 453487, 1360461, 2267435, 4081383, 6802305, 20406915]

約数ペア:

[(1, 20406915), (3, 6802305), (5, 4081383), (9, 2267435), (15, 1360461), (45, 453487), (439, 46485), (1033, 19755), (1317, 15495), (2195, 9297), (3099, 6585), (3951, 5165)]