405486770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{239933}}^1$

素因数の和:239966

約数の個数: 24

約数和(自身を含む): 790342596

約数和(自身を除く): 384855826

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 239933, 479866, 1199665, 2399330, 3119129, 6238258, 15595645, 31191290, 40548677, 81097354, 202743385, 405486770]

約数ペア:

[(1, 405486770), (2, 202743385), (5, 81097354), (10, 40548677), (13, 31191290), (26, 15595645), (65, 6238258), (130, 3119129), (169, 2399330), (338, 1199665), (845, 479866), (1690, 239933)]