390048620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{115399}}^1$

素因数の和:115434

約数の個数: 36

約数和(自身を含む): 886964400

約数和(自身を除く): 496915780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 115399, 230798, 461596, 576995, 1153990, 1500187, 2307980, 3000374, 6000748, 7500935, 15001870, 19502431, 30003740, 39004862, 78009724, 97512155, 195024310, 390048620]

約数ペア:

[(1, 390048620), (2, 195024310), (4, 97512155), (5, 78009724), (10, 39004862), (13, 30003740), (20, 19502431), (26, 15001870), (52, 7500935), (65, 6000748), (130, 3000374), (169, 2307980), (260, 1500187), (338, 1153990), (676, 576995), (845, 461596), (1690, 230798), (3380, 115399)]