51866240

素因数分解:

$2^7\times 5^1\times {\mathrm{81041}}^1$

素因数の和:81060

約数の個数: 32

約数和(自身を含む): 123994260

約数和(自身を除く): 72128020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 81041, 162082, 324164, 405205, 648328, 810410, 1296656, 1620820, 2593312, 3241640, 5186624, 6483280, 10373248, 12966560, 25933120, 51866240]

約数ペア:

[(1, 51866240), (2, 25933120), (4, 12966560), (5, 10373248), (8, 6483280), (10, 5186624), (16, 3241640), (20, 2593312), (32, 1620820), (40, 1296656), (64, 810410), (80, 648328), (128, 405205), (160, 324164), (320, 162082), (640, 81041)]