20784420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115469}}^1$

素因数の和:115484

約数の個数: 36

約数和(自身を含む): 63046620

約数和(自身を除く): 42262200

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115469, 230938, 346407, 461876, 577345, 692814, 1039221, 1154690, 1385628, 1732035, 2078442, 2309380, 3464070, 4156884, 5196105, 6928140, 10392210, 20784420]

約数ペア:

[(1, 20784420), (2, 10392210), (3, 6928140), (4, 5196105), (5, 4156884), (6, 3464070), (9, 2309380), (10, 2078442), (12, 1732035), (15, 1385628), (18, 1154690), (20, 1039221), (30, 692814), (36, 577345), (45, 461876), (60, 346407), (90, 230938), (180, 115469)]