81018020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{94207}}^1$

素因数の和:94259

約数の個数: 24

約数和(自身を含む): 174096384

約数和(自身を除く): 93078364

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 94207, 188414, 376828, 471035, 942070, 1884140, 4050901, 8101802, 16203604, 20254505, 40509010, 81018020]

約数ペア:

[(1, 81018020), (2, 40509010), (4, 20254505), (5, 16203604), (10, 8101802), (20, 4050901), (43, 1884140), (86, 942070), (172, 471035), (215, 376828), (430, 188414), (860, 94207)]