18901791

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{719}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 28753920

約数和(自身を除く): 9852129

約数列:

[1, 3, 9, 23, 69, 127, 207, 381, 719, 1143, 2157, 2921, 6471, 8763, 16537, 26289, 49611, 91313, 148833, 273939, 821817, 2100199, 6300597, 18901791]

約数ペア:

[(1, 18901791), (3, 6300597), (9, 2100199), (23, 821817), (69, 273939), (127, 148833), (207, 91313), (381, 49611), (719, 26289), (1143, 16537), (2157, 8763), (2921, 6471)]