81219180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193379}}^1$

素因数の和:193398

約数の個数: 48

約数和(自身を含む): 259902720

約数和(自身を除く): 178683540

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, 193379, 386758, 580137, 773516, 966895, 1160274, 1353653, 1933790, 2320548, 2707306, 2900685, 3867580, 4060959, 5414612, 5801370, 6768265, 8121918, 11602740, 13536530, 16243836, 20304795, 27073060, 40609590, 81219180]

約数ペア:

[(1, 81219180), (2, 40609590), (3, 27073060), (4, 20304795), (5, 16243836), (6, 13536530), (7, 11602740), (10, 8121918), (12, 6768265), (14, 5801370), (15, 5414612), (20, 4060959), (21, 3867580), (28, 2900685), (30, 2707306), (35, 2320548), (42, 1933790), (60, 1353653), (70, 1160274), (84, 966895), (105, 773516), (140, 580137), (210, 386758), (420, 193379)]