155305640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{554663}}^1$

素因数の和:554681

約数の個数: 32

約数和(自身を含む): 399358080

約数和(自身を除く): 244052440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 554663, 1109326, 2218652, 2773315, 3882641, 4437304, 5546630, 7765282, 11093260, 15530564, 19413205, 22186520, 31061128, 38826410, 77652820, 155305640]

約数ペア:

[(1, 155305640), (2, 77652820), (4, 38826410), (5, 31061128), (7, 22186520), (8, 19413205), (10, 15530564), (14, 11093260), (20, 7765282), (28, 5546630), (35, 4437304), (40, 3882641), (56, 2773315), (70, 2218652), (140, 1109326), (280, 554663)]