139585880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{498521}}^1$

素因数の和:498539

約数の個数: 32

約数和(自身を含む): 358935840

約数和(自身を除く): 219349960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 498521, 997042, 1994084, 2492605, 3489647, 3988168, 4985210, 6979294, 9970420, 13958588, 17448235, 19940840, 27917176, 34896470, 69792940, 139585880]

約数ペア:

[(1, 139585880), (2, 69792940), (4, 34896470), (5, 27917176), (7, 19940840), (8, 17448235), (10, 13958588), (14, 9970420), (20, 6979294), (28, 4985210), (35, 3988168), (40, 3489647), (56, 2492605), (70, 1994084), (140, 997042), (280, 498521)]