20677760

素因数分解:

$2^7\times 5^1\times {\mathrm{32309}}^1$

素因数の和:32328

約数の個数: 32

約数和(自身を含む): 49434300

約数和(自身を除く): 28756540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32309, 64618, 129236, 161545, 258472, 323090, 516944, 646180, 1033888, 1292360, 2067776, 2584720, 4135552, 5169440, 10338880, 20677760]

約数ペア:

[(1, 20677760), (2, 10338880), (4, 5169440), (5, 4135552), (8, 2584720), (10, 2067776), (16, 1292360), (20, 1033888), (32, 646180), (40, 516944), (64, 323090), (80, 258472), (128, 161545), (160, 129236), (320, 64618), (640, 32309)]