81970685

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{547}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 109372032

約数和(自身を除く): 27401347

約数列:

[1, 5, 17, 41, 43, 85, 205, 215, 547, 697, 731, 1763, 2735, 3485, 3655, 8815, 9299, 22427, 23521, 29971, 46495, 112135, 117605, 149855, 381259, 399857, 964361, 1906295, 1999285, 4821805, 16394137, 81970685]

約数ペア:

[(1, 81970685), (5, 16394137), (17, 4821805), (41, 1999285), (43, 1906295), (85, 964361), (205, 399857), (215, 381259), (547, 149855), (697, 117605), (731, 112135), (1763, 46495), (2735, 29971), (3485, 23521), (3655, 22427), (8815, 9299)]