20877790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2111}}^1$

素因数の和:2184

約数の個数: 32

約数和(自身を含む): 40144896

約数和(自身を除く): 19267106

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2111, 4222, 4945, 9890, 10555, 21110, 48553, 90773, 97106, 181546, 242765, 453865, 485530, 907730, 2087779, 4175558, 10438895, 20877790]

約数ペア:

[(1, 20877790), (2, 10438895), (5, 4175558), (10, 2087779), (23, 907730), (43, 485530), (46, 453865), (86, 242765), (115, 181546), (215, 97106), (230, 90773), (430, 48553), (989, 21110), (1978, 10555), (2111, 9890), (4222, 4945)]