78824840

素因数分解:

$2^3\times 5^1\times {\mathrm{1970621}}^1$

素因数の和:1970632

約数の個数: 16

約数和(自身を含む): 177355980

約数和(自身を除く): 98531140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1970621, 3941242, 7882484, 9853105, 15764968, 19706210, 39412420, 78824840]

約数ペア:

[(1, 78824840), (2, 39412420), (4, 19706210), (5, 15764968), (8, 9853105), (10, 7882484), (20, 3941242), (40, 1970621)]