19425140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1664

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 27749260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1559, 1780, 2492, 3115, 3118, 6230, 6236, 7795, 10913, 12460, 15590, 21826, 31180, 43652, 54565, 109130, 138751, 218260, 277502, 555004, 693755, 971257, 1387510, 1942514, 2775020, 3885028, 4856285, 9712570, 19425140]

約数ペア:

[(1, 19425140), (2, 9712570), (4, 4856285), (5, 3885028), (7, 2775020), (10, 1942514), (14, 1387510), (20, 971257), (28, 693755), (35, 555004), (70, 277502), (89, 218260), (140, 138751), (178, 109130), (356, 54565), (445, 43652), (623, 31180), (890, 21826), (1246, 15590), (1559, 12460), (1780, 10913), (2492, 7795), (3115, 6236), (3118, 6230)]