289647920

素因数分解:

$2^4\times 5^1\times {\mathrm{3620599}}^1$

素因数の和:3620612

約数の個数: 20

約数和(自身を含む): 673431600

約数和(自身を除く): 383783680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3620599, 7241198, 14482396, 18102995, 28964792, 36205990, 57929584, 72411980, 144823960, 289647920]

約数ペア:

[(1, 289647920), (2, 144823960), (4, 72411980), (5, 57929584), (8, 36205990), (10, 28964792), (16, 18102995), (20, 14482396), (40, 7241198), (80, 3620599)]