449727920

素因数分解:

$2^4\times 5^1\times {\mathrm{5621599}}^1$

素因数の和:5621612

約数の個数: 20

約数和(自身を含む): 1045617600

約数和(自身を除く): 595889680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5621599, 11243198, 22486396, 28107995, 44972792, 56215990, 89945584, 112431980, 224863960, 449727920]

約数ペア:

[(1, 449727920), (2, 224863960), (4, 112431980), (5, 89945584), (8, 56215990), (10, 44972792), (16, 28107995), (20, 22486396), (40, 11243198), (80, 5621599)]