128280621

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1\times {\mathrm{419}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 199987200

約数和(自身を除く): 71706579

約数列:

[1, 3, 7, 21, 61, 183, 239, 419, 427, 717, 1257, 1281, 1673, 2933, 5019, 8799, 14579, 25559, 43737, 76677, 100141, 102053, 178913, 300423, 306159, 536739, 700987, 2102961, 6108601, 18325803, 42760207, 128280621]

約数ペア:

[(1, 128280621), (3, 42760207), (7, 18325803), (21, 6108601), (61, 2102961), (183, 700987), (239, 536739), (419, 306159), (427, 300423), (717, 178913), (1257, 102053), (1281, 100141), (1673, 76677), (2933, 43737), (5019, 25559), (8799, 14579)]