139326280

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{17681}}^1$

素因数の和:17889

約数の個数: 32

約数和(自身を含む): 315093240

約数和(自身を除く): 175766960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 17681, 35362, 70724, 88405, 141448, 176810, 353620, 707240, 3483157, 6966314, 13932628, 17415785, 27865256, 34831570, 69663140, 139326280]

約数ペア:

[(1, 139326280), (2, 69663140), (4, 34831570), (5, 27865256), (8, 17415785), (10, 13932628), (20, 6966314), (40, 3483157), (197, 707240), (394, 353620), (788, 176810), (985, 141448), (1576, 88405), (1970, 70724), (3940, 35362), (7880, 17681)]