638743994

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{19259}}^1$

素因数の和:19394

約数の個数: 32

約数和(自身を含む): 1153751040

約数和(自身を除く): 515007046

約数列:

[1, 2, 7, 14, 23, 46, 103, 161, 206, 322, 721, 1442, 2369, 4738, 16583, 19259, 33166, 38518, 134813, 269626, 442957, 885914, 1983677, 3100699, 3967354, 6201398, 13885739, 27771478, 45624571, 91249142, 319371997, 638743994]

約数ペア:

[(1, 638743994), (2, 319371997), (7, 91249142), (14, 45624571), (23, 27771478), (46, 13885739), (103, 6201398), (161, 3967354), (206, 3100699), (322, 1983677), (721, 885914), (1442, 442957), (2369, 269626), (4738, 134813), (16583, 38518), (19259, 33166)]