20964980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55171}}^1$

素因数の和:55199

約数の個数: 24

約数和(自身を含む): 46344480

約数和(自身を除く): 25379500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55171, 110342, 220684, 275855, 551710, 1048249, 1103420, 2096498, 4192996, 5241245, 10482490, 20964980]

約数ペア:

[(1, 20964980), (2, 10482490), (4, 5241245), (5, 4192996), (10, 2096498), (19, 1103420), (20, 1048249), (38, 551710), (76, 275855), (95, 220684), (190, 110342), (380, 55171)]