78894285560

素因数分解:

$2^3\times 5^1\times {\mathrm{1972357139}}^1$

素因数の和:1972357150

約数の個数: 16

約数和(自身を含む): 177512142600

約数和(自身を除く): 98617857040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1972357139, 3944714278, 7889428556, 9861785695, 15778857112, 19723571390, 39447142780, 78894285560]

約数ペア:

[(1, 78894285560), (2, 39447142780), (4, 19723571390), (5, 15778857112), (8, 9861785695), (10, 7889428556), (20, 3944714278), (40, 1972357139)]