19670140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1289}}^1$

素因数の和:1414

約数の個数: 48

約数和(自身を含む): 47678400

約数和(自身を除く): 28008260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1289, 1526, 2180, 2578, 3052, 3815, 5156, 6445, 7630, 9023, 12890, 15260, 18046, 25780, 36092, 45115, 90230, 140501, 180460, 281002, 562004, 702505, 983507, 1405010, 1967014, 2810020, 3934028, 4917535, 9835070, 19670140]

約数ペア:

[(1, 19670140), (2, 9835070), (4, 4917535), (5, 3934028), (7, 2810020), (10, 1967014), (14, 1405010), (20, 983507), (28, 702505), (35, 562004), (70, 281002), (109, 180460), (140, 140501), (218, 90230), (436, 45115), (545, 36092), (763, 25780), (1090, 18046), (1289, 15260), (1526, 12890), (2180, 9023), (2578, 7630), (3052, 6445), (3815, 5156)]