81412480

素因数分解:

$2^7\times 5^1\times {\mathrm{127207}}^1$

素因数の和:127226

約数の個数: 32

約数和(自身を含む): 194628240

約数和(自身を除く): 113215760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127207, 254414, 508828, 636035, 1017656, 1272070, 2035312, 2544140, 4070624, 5088280, 8141248, 10176560, 16282496, 20353120, 40706240, 81412480]

約数ペア:

[(1, 81412480), (2, 40706240), (4, 20353120), (5, 16282496), (8, 10176560), (10, 8141248), (16, 5088280), (20, 4070624), (32, 2544140), (40, 2035312), (64, 1272070), (80, 1017656), (128, 636035), (160, 508828), (320, 254414), (640, 127207)]