20498900

素因数分解:

$2^2\times 5^2\times {\mathrm{359}}^1\times {\mathrm{571}}^1$

素因数の和:944

約数の個数: 36

約数和(自身を含む): 44684640

約数和(自身を除く): 24185740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 359, 571, 718, 1142, 1436, 1795, 2284, 2855, 3590, 5710, 7180, 8975, 11420, 14275, 17950, 28550, 35900, 57100, 204989, 409978, 819956, 1024945, 2049890, 4099780, 5124725, 10249450, 20498900]

約数ペア:

[(1, 20498900), (2, 10249450), (4, 5124725), (5, 4099780), (10, 2049890), (20, 1024945), (25, 819956), (50, 409978), (100, 204989), (359, 57100), (571, 35900), (718, 28550), (1142, 17950), (1436, 14275), (1795, 11420), (2284, 8975), (2855, 7180), (3590, 5710)]