28981760

素因数分解:

$2^9\times 5^1\times {\mathrm{11321}}^1$

素因数の和:11344

約数の個数: 40

約数和(自身を含む): 69494436

約数和(自身を除く): 40512676

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 11321, 22642, 45284, 56605, 90568, 113210, 181136, 226420, 362272, 452840, 724544, 905680, 1449088, 1811360, 2898176, 3622720, 5796352, 7245440, 14490880, 28981760]

約数ペア:

[(1, 28981760), (2, 14490880), (4, 7245440), (5, 5796352), (8, 3622720), (10, 2898176), (16, 1811360), (20, 1449088), (32, 905680), (40, 724544), (64, 452840), (80, 362272), (128, 226420), (160, 181136), (256, 113210), (320, 90568), (512, 56605), (640, 45284), (1280, 22642), (2560, 11321)]