21387180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{356453}}^1$

素因数の和:356465

約数の個数: 24

約数和(自身を含む): 59884272

約数和(自身を除く): 38497092

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 356453, 712906, 1069359, 1425812, 1782265, 2138718, 3564530, 4277436, 5346795, 7129060, 10693590, 21387180]

約数ペア:

[(1, 21387180), (2, 10693590), (3, 7129060), (4, 5346795), (5, 4277436), (6, 3564530), (10, 2138718), (12, 1782265), (15, 1425812), (20, 1069359), (30, 712906), (60, 356453)]