20819355

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{29531}}^1$

素因数の和:29586

約数の個数: 16

約数和(自身を含む): 34020864

約数和(自身を除く): 13201509

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 29531, 88593, 147655, 442965, 1387957, 4163871, 6939785, 20819355]

約数ペア:

[(1, 20819355), (3, 6939785), (5, 4163871), (15, 1387957), (47, 442965), (141, 147655), (235, 88593), (705, 29531)]