318215440

素因数分解:

$2^4\times 5^1\times {\mathrm{3977693}}^1$

素因数の和:3977706

約数の個数: 20

約数和(自身を含む): 739851084

約数和(自身を除く): 421635644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3977693, 7955386, 15910772, 19888465, 31821544, 39776930, 63643088, 79553860, 159107720, 318215440]

約数ペア:

[(1, 318215440), (2, 159107720), (4, 79553860), (5, 63643088), (8, 39776930), (10, 31821544), (16, 19888465), (20, 15910772), (40, 7955386), (80, 3977693)]