20979650

素因数分解:

$2^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{3203}}^1$

素因数の和:3346

約数の個数: 24

約数和(自身を含む): 39332304

約数和(自身を除く): 18352654

約数列:

[1, 2, 5, 10, 25, 50, 131, 262, 655, 1310, 3203, 3275, 6406, 6550, 16015, 32030, 80075, 160150, 419593, 839186, 2097965, 4195930, 10489825, 20979650]

約数ペア:

[(1, 20979650), (2, 10489825), (5, 4195930), (10, 2097965), (25, 839186), (50, 419593), (131, 160150), (262, 80075), (655, 32030), (1310, 16015), (3203, 6550), (3275, 6406)]