78220840

素因数分解:

$2^3\times 5^1\times {\mathrm{1955521}}^1$

素因数の和:1955532

約数の個数: 16

約数和(自身を含む): 175996980

約数和(自身を除く): 97776140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1955521, 3911042, 7822084, 9777605, 15644168, 19555210, 39110420, 78220840]

約数ペア:

[(1, 78220840), (2, 39110420), (4, 19555210), (5, 15644168), (8, 9777605), (10, 7822084), (20, 3911042), (40, 1955521)]