28120113

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2843}}^1$

素因数の和:3013

約数の個数: 24

約数和(自身を含む): 46732608

約数和(自身を除く): 18612495

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 2843, 3297, 8529, 9891, 19901, 25587, 59703, 179109, 446351, 1339053, 3124457, 4017159, 9373371, 28120113]

約数ペア:

[(1, 28120113), (3, 9373371), (7, 4017159), (9, 3124457), (21, 1339053), (63, 446351), (157, 179109), (471, 59703), (1099, 25587), (1413, 19901), (2843, 9891), (3297, 8529)]