78521680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{51659}}^1$

素因数の和:51691

約数の個数: 40

約数和(自身を含む): 192175200

約数和(自身を除く): 113653520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 51659, 103318, 206636, 258295, 413272, 516590, 826544, 981521, 1033180, 1963042, 2066360, 3926084, 4132720, 4907605, 7852168, 9815210, 15704336, 19630420, 39260840, 78521680]

約数ペア:

[(1, 78521680), (2, 39260840), (4, 19630420), (5, 15704336), (8, 9815210), (10, 7852168), (16, 4907605), (19, 4132720), (20, 3926084), (38, 2066360), (40, 1963042), (76, 1033180), (80, 981521), (95, 826544), (152, 516590), (190, 413272), (304, 258295), (380, 206636), (760, 103318), (1520, 51659)]