21979178

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{7481}}^1$

素因数の和:7609

約数の個数: 16

約数和(自身を含む): 35823816

約数和(自身を除く): 13844638

約数列:

[1, 2, 13, 26, 113, 226, 1469, 2938, 7481, 14962, 97253, 194506, 845353, 1690706, 10989589, 21979178]

約数ペア:

[(1, 21979178), (2, 10989589), (13, 1690706), (26, 845353), (113, 194506), (226, 97253), (1469, 14962), (2938, 7481)]