20147200

素因数分解:

$2^{10}\times 5^2\times {\mathrm{787}}^1$

素因数の和:817

約数の個数: 66

約数和(自身を含む): 50004116

約数和(自身を除く): 29856916

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 787, 800, 1024, 1280, 1574, 1600, 2560, 3148, 3200, 3935, 5120, 6296, 6400, 7870, 12592, 12800, 15740, 19675, 25184, 25600, 31480, 39350, 50368, 62960, 78700, 100736, 125920, 157400, 201472, 251840, 314800, 402944, 503680, 629600, 805888, 1007360, 1259200, 2014720, 2518400, 4029440, 5036800, 10073600, 20147200]

約数ペア:

[(1, 20147200), (2, 10073600), (4, 5036800), (5, 4029440), (8, 2518400), (10, 2014720), (16, 1259200), (20, 1007360), (25, 805888), (32, 629600), (40, 503680), (50, 402944), (64, 314800), (80, 251840), (100, 201472), (128, 157400), (160, 125920), (200, 100736), (256, 78700), (320, 62960), (400, 50368), (512, 39350), (640, 31480), (787, 25600), (800, 25184), (1024, 19675), (1280, 15740), (1574, 12800), (1600, 12592), (2560, 7870), (3148, 6400), (3200, 6296), (3935, 5120)]