20963920

素因数分解:

$2^4\times 5^1\times {\mathrm{262049}}^1$

素因数の和:262062

約数の個数: 20

約数和(自身を含む): 48741300

約数和(自身を除く): 27777380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262049, 524098, 1048196, 1310245, 2096392, 2620490, 4192784, 5240980, 10481960, 20963920]

約数ペア:

[(1, 20963920), (2, 10481960), (4, 5240980), (5, 4192784), (8, 2620490), (10, 2096392), (16, 1310245), (20, 1048196), (40, 524098), (80, 262049)]