18888909680

素因数分解:

$2^4\times 5^1\times {\mathrm{236111371}}^1$

素因数の和:236111384

約数の個数: 20

約数和(自身を含む): 43916715192

約数和(自身を除く): 25027805512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236111371, 472222742, 944445484, 1180556855, 1888890968, 2361113710, 3777781936, 4722227420, 9444454840, 18888909680]

約数ペア:

[(1, 18888909680), (2, 9444454840), (4, 4722227420), (5, 3777781936), (8, 2361113710), (10, 1888890968), (16, 1180556855), (20, 944445484), (40, 472222742), (80, 236111371)]