1440640

素因数分解:

$2^7\times 5^1\times {\mathrm{2251}}^1$

素因数の和:2270

約数の個数: 32

約数和(自身を含む): 3445560

約数和(自身を除く): 2004920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 2251, 4502, 9004, 11255, 18008, 22510, 36016, 45020, 72032, 90040, 144064, 180080, 288128, 360160, 720320, 1440640]

約数ペア:

[(1, 1440640), (2, 720320), (4, 360160), (5, 288128), (8, 180080), (10, 144064), (16, 90040), (20, 72032), (32, 45020), (40, 36016), (64, 22510), (80, 18008), (128, 11255), (160, 9004), (320, 4502), (640, 2251)]