128970880

素因数分解:

$2^7\times 5^1\times {\mathrm{201517}}^1$

素因数の和:201536

約数の個数: 32

約数和(自身を含む): 308322540

約数和(自身を除く): 179351660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 201517, 403034, 806068, 1007585, 1612136, 2015170, 3224272, 4030340, 6448544, 8060680, 12897088, 16121360, 25794176, 32242720, 64485440, 128970880]

約数ペア:

[(1, 128970880), (2, 64485440), (4, 32242720), (5, 25794176), (8, 16121360), (10, 12897088), (16, 8060680), (20, 6448544), (32, 4030340), (40, 3224272), (64, 2015170), (80, 1612136), (128, 1007585), (160, 806068), (320, 403034), (640, 201517)]