402080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{359}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 1088640

約数和(自身を除く): 686560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 359, 560, 718, 1120, 1436, 1795, 2513, 2872, 3590, 5026, 5744, 7180, 10052, 11488, 12565, 14360, 20104, 25130, 28720, 40208, 50260, 57440, 80416, 100520, 201040, 402080]

約数ペア:

[(1, 402080), (2, 201040), (4, 100520), (5, 80416), (7, 57440), (8, 50260), (10, 40208), (14, 28720), (16, 25130), (20, 20104), (28, 14360), (32, 12565), (35, 11488), (40, 10052), (56, 7180), (70, 5744), (80, 5026), (112, 3590), (140, 2872), (160, 2513), (224, 1795), (280, 1436), (359, 1120), (560, 718)]