20784780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115471}}^1$

素因数の和:115486

約数の個数: 36

約数和(自身を含む): 63047712

約数和(自身を除く): 42262932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115471, 230942, 346413, 461884, 577355, 692826, 1039239, 1154710, 1385652, 1732065, 2078478, 2309420, 3464130, 4156956, 5196195, 6928260, 10392390, 20784780]

約数ペア:

[(1, 20784780), (2, 10392390), (3, 6928260), (4, 5196195), (5, 4156956), (6, 3464130), (9, 2309420), (10, 2078478), (12, 1732065), (15, 1385652), (18, 1154710), (20, 1039239), (30, 692826), (36, 577355), (45, 461884), (60, 346413), (90, 230942), (180, 115471)]