417221680

素因数分解:

$2^4\times 5^1\times {\mathrm{5215271}}^1$

素因数の和:5215284

約数の個数: 20

約数和(自身を含む): 970040592

約数和(自身を除く): 552818912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5215271, 10430542, 20861084, 26076355, 41722168, 52152710, 83444336, 104305420, 208610840, 417221680]

約数ペア:

[(1, 417221680), (2, 208610840), (4, 104305420), (5, 83444336), (8, 52152710), (10, 41722168), (16, 26076355), (20, 20861084), (40, 10430542), (80, 5215271)]