20081990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{87313}}^1$

素因数の和:87343

約数の個数: 16

約数和(自身を含む): 37719648

約数和(自身を除く): 17637658

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 87313, 174626, 436565, 873130, 2008199, 4016398, 10040995, 20081990]

約数ペア:

[(1, 20081990), (2, 10040995), (5, 4016398), (10, 2008199), (23, 873130), (46, 436565), (115, 174626), (230, 87313)]