78589880

素因数分解:

$2^3\times 5^1\times {\mathrm{977}}^1\times {\mathrm{2011}}^1$

素因数の和:2999

約数の個数: 32

約数和(自身を含む): 177096240

約数和(自身を除く): 98506360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 977, 1954, 2011, 3908, 4022, 4885, 7816, 8044, 9770, 10055, 16088, 19540, 20110, 39080, 40220, 80440, 1964747, 3929494, 7858988, 9823735, 15717976, 19647470, 39294940, 78589880]

約数ペア:

[(1, 78589880), (2, 39294940), (4, 19647470), (5, 15717976), (8, 9823735), (10, 7858988), (20, 3929494), (40, 1964747), (977, 80440), (1954, 40220), (2011, 39080), (3908, 20110), (4022, 19540), (4885, 16088), (7816, 10055), (8044, 9770)]