18889731

素因数分解:

$3^2\times 7^1\times {\mathrm{439}}^1\times {\mathrm{683}}^1$

素因数の和:1135

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 12410109

約数列:

[1, 3, 7, 9, 21, 63, 439, 683, 1317, 2049, 3073, 3951, 4781, 6147, 9219, 14343, 27657, 43029, 299837, 899511, 2098859, 2698533, 6296577, 18889731]

約数ペア:

[(1, 18889731), (3, 6296577), (7, 2698533), (9, 2098859), (21, 899511), (63, 299837), (439, 43029), (683, 27657), (1317, 14343), (2049, 9219), (3073, 6147), (3951, 4781)]