21087843

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1117}}^1$

素因数の和:1187

約数の個数: 32

約数和(自身を含む): 34344960

約数和(自身を除く): 13257117

約数列:

[1, 3, 7, 21, 29, 31, 87, 93, 203, 217, 609, 651, 899, 1117, 2697, 3351, 6293, 7819, 18879, 23457, 32393, 34627, 97179, 103881, 226751, 242389, 680253, 727167, 1004183, 3012549, 7029281, 21087843]

約数ペア:

[(1, 21087843), (3, 7029281), (7, 3012549), (21, 1004183), (29, 727167), (31, 680253), (87, 242389), (93, 226751), (203, 103881), (217, 97179), (609, 34627), (651, 32393), (899, 23457), (1117, 18879), (2697, 7819), (3351, 6293)]