201920

素因数分解:

$2^6\times 5^1\times {\mathrm{631}}^1$

素因数の和:648

約数の個数: 28

約数和(自身を含む): 481584

約数和(自身を除く): 279664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 631, 1262, 2524, 3155, 5048, 6310, 10096, 12620, 20192, 25240, 40384, 50480, 100960, 201920]

約数ペア:

[(1, 201920), (2, 100960), (4, 50480), (5, 40384), (8, 25240), (10, 20192), (16, 12620), (20, 10096), (32, 6310), (40, 5048), (64, 3155), (80, 2524), (160, 1262), (320, 631)]