77839640

素因数分解:

$2^3\times 5^1\times {\mathrm{1945991}}^1$

素因数の和:1946002

約数の個数: 16

約数和(自身を含む): 175139280

約数和(自身を除く): 97299640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1945991, 3891982, 7783964, 9729955, 15567928, 19459910, 38919820, 77839640]

約数ペア:

[(1, 77839640), (2, 38919820), (4, 19459910), (5, 15567928), (8, 9729955), (10, 7783964), (20, 3891982), (40, 1945991)]