20830365

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2707}}^1$

素因数の和:2743

約数の個数: 40

約数和(自身を含む): 39320160

約数和(自身を除く): 18489795

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2707, 7695, 8121, 13535, 24363, 40605, 51433, 73089, 121815, 154299, 219267, 257165, 365445, 462897, 771495, 1096335, 1388691, 2314485, 4166073, 6943455, 20830365]

約数ペア:

[(1, 20830365), (3, 6943455), (5, 4166073), (9, 2314485), (15, 1388691), (19, 1096335), (27, 771495), (45, 462897), (57, 365445), (81, 257165), (95, 219267), (135, 154299), (171, 121815), (285, 73089), (405, 51433), (513, 40605), (855, 24363), (1539, 13535), (2565, 8121), (2707, 7695)]