20945235

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4001}}^1$

素因数の和:4358

約数の個数: 16

約数和(自身を含む): 33616800

約数和(自身を除く): 12671565

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 4001, 5235, 12003, 20005, 60015, 1396349, 4189047, 6981745, 20945235]

約数ペア:

[(1, 20945235), (3, 6981745), (5, 4189047), (15, 1396349), (349, 60015), (1047, 20005), (1745, 12003), (4001, 5235)]