259827540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{618637}}^1$

素因数の和:618656

約数の個数: 48

約数和(自身を含む): 831449472

約数和(自身を除く): 571621932

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 618637, 1237274, 1855911, 2474548, 3093185, 3711822, 4330459, 6186370, 7423644, 8660918, 9279555, 12372740, 12991377, 17321836, 18559110, 21652295, 25982754, 37118220, 43304590, 51965508, 64956885, 86609180, 129913770, 259827540]

約数ペア:

[(1, 259827540), (2, 129913770), (3, 86609180), (4, 64956885), (5, 51965508), (6, 43304590), (7, 37118220), (10, 25982754), (12, 21652295), (14, 18559110), (15, 17321836), (20, 12991377), (21, 12372740), (28, 9279555), (30, 8660918), (35, 7423644), (42, 6186370), (60, 4330459), (70, 3711822), (84, 3093185), (105, 2474548), (140, 1855911), (210, 1237274), (420, 618637)]