21402724

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 44722048

約数和(自身を除く): 23319324

約数列:

[1, 2, 4, 7, 14, 28, 37, 73, 74, 146, 148, 259, 283, 292, 511, 518, 566, 1022, 1036, 1132, 1981, 2044, 2701, 3962, 5402, 7924, 10471, 10804, 18907, 20659, 20942, 37814, 41318, 41884, 73297, 75628, 82636, 144613, 146594, 289226, 293188, 578452, 764383, 1528766, 3057532, 5350681, 10701362, 21402724]

約数ペア:

[(1, 21402724), (2, 10701362), (4, 5350681), (7, 3057532), (14, 1528766), (28, 764383), (37, 578452), (73, 293188), (74, 289226), (146, 146594), (148, 144613), (259, 82636), (283, 75628), (292, 73297), (511, 41884), (518, 41318), (566, 37814), (1022, 20942), (1036, 20659), (1132, 18907), (1981, 10804), (2044, 10471), (2701, 7924), (3962, 5402)]