21842739

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{389}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 33583680

約数和(自身を除く): 11740941

約数列:

[1, 3, 9, 17, 51, 153, 367, 389, 1101, 1167, 3303, 3501, 6239, 6613, 18717, 19839, 56151, 59517, 142763, 428289, 1284867, 2426971, 7280913, 21842739]

約数ペア:

[(1, 21842739), (3, 7280913), (9, 2426971), (17, 1284867), (51, 428289), (153, 142763), (367, 59517), (389, 56151), (1101, 19839), (1167, 18717), (3303, 6613), (3501, 6239)]