81184880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144973}}^1$

素因数の和:144993

約数の個数: 40

約数和(自身を含む): 215721312

約数和(自身を除く): 134536432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144973, 289946, 579892, 724865, 1014811, 1159784, 1449730, 2029622, 2319568, 2899460, 4059244, 5074055, 5798920, 8118488, 10148110, 11597840, 16236976, 20296220, 40592440, 81184880]

約数ペア:

[(1, 81184880), (2, 40592440), (4, 20296220), (5, 16236976), (7, 11597840), (8, 10148110), (10, 8118488), (14, 5798920), (16, 5074055), (20, 4059244), (28, 2899460), (35, 2319568), (40, 2029622), (56, 1449730), (70, 1159784), (80, 1014811), (112, 724865), (140, 579892), (280, 289946), (560, 144973)]