81936070

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{2141}}^1$

素因数の和:2280

約数の個数: 32

約数和(自身を含む): 152681760

約数和(自身を除く): 70745690

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 890, 2141, 3827, 4282, 7654, 10705, 19135, 21410, 38270, 92063, 184126, 190549, 381098, 460315, 920630, 952745, 1905490, 8193607, 16387214, 40968035, 81936070]

約数ペア:

[(1, 81936070), (2, 40968035), (5, 16387214), (10, 8193607), (43, 1905490), (86, 952745), (89, 920630), (178, 460315), (215, 381098), (430, 190549), (445, 184126), (890, 92063), (2141, 38270), (3827, 21410), (4282, 19135), (7654, 10705)]