21238020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117989}}^1$

素因数の和:118004

約数の個数: 36

約数和(自身を含む): 64422540

約数和(自身を除く): 43184520

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117989, 235978, 353967, 471956, 589945, 707934, 1061901, 1179890, 1415868, 1769835, 2123802, 2359780, 3539670, 4247604, 5309505, 7079340, 10619010, 21238020]

約数ペア:

[(1, 21238020), (2, 10619010), (3, 7079340), (4, 5309505), (5, 4247604), (6, 3539670), (9, 2359780), (10, 2123802), (12, 1769835), (15, 1415868), (18, 1179890), (20, 1061901), (30, 707934), (36, 589945), (45, 471956), (60, 353967), (90, 235978), (180, 117989)]