66878840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{238853}}^1$

素因数の和:238871

約数の個数: 32

約数和(自身を含む): 171974880

約数和(自身を除く): 105096040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 238853, 477706, 955412, 1194265, 1671971, 1910824, 2388530, 3343942, 4777060, 6687884, 8359855, 9554120, 13375768, 16719710, 33439420, 66878840]

約数ペア:

[(1, 66878840), (2, 33439420), (4, 16719710), (5, 13375768), (7, 9554120), (8, 8359855), (10, 6687884), (14, 4777060), (20, 3343942), (28, 2388530), (35, 1910824), (40, 1671971), (56, 1194265), (70, 955412), (140, 477706), (280, 238853)]