20645313

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{7901}}^1$

素因数の和:7984

約数の個数: 16

約数和(自身を含む): 30090816

約数和(自身を除く): 9445503

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 7901, 23703, 102713, 308139, 529367, 1588101, 6881771, 20645313]

約数ペア:

[(1, 20645313), (3, 6881771), (13, 1588101), (39, 529367), (67, 308139), (201, 102713), (871, 23703), (2613, 7901)]