81446120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{290879}}^1$

素因数の和:290897

約数の個数: 32

約数和(自身を含む): 209433600

約数和(自身を除く): 127987480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 290879, 581758, 1163516, 1454395, 2036153, 2327032, 2908790, 4072306, 5817580, 8144612, 10180765, 11635160, 16289224, 20361530, 40723060, 81446120]

約数ペア:

[(1, 81446120), (2, 40723060), (4, 20361530), (5, 16289224), (7, 11635160), (8, 10180765), (10, 8144612), (14, 5817580), (20, 4072306), (28, 2908790), (35, 2327032), (40, 2036153), (56, 1454395), (70, 1163516), (140, 581758), (280, 290879)]