220998820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{225509}}^1$

素因数の和:225532

約数の個数: 36

約数和(自身を含む): 539870940

約数和(自身を除く): 318872120

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 225509, 451018, 902036, 1127545, 1578563, 2255090, 3157126, 4510180, 6314252, 7892815, 11049941, 15785630, 22099882, 31571260, 44199764, 55249705, 110499410, 220998820]

約数ペア:

[(1, 220998820), (2, 110499410), (4, 55249705), (5, 44199764), (7, 31571260), (10, 22099882), (14, 15785630), (20, 11049941), (28, 7892815), (35, 6314252), (49, 4510180), (70, 3157126), (98, 2255090), (140, 1578563), (196, 1127545), (245, 902036), (490, 451018), (980, 225509)]