20698900

素因数分解:

$2^2\times 5^2\times {\mathrm{449}}^1\times {\mathrm{461}}^1$

素因数の和:924

約数の個数: 36

約数和(自身を含む): 45114300

約数和(自身を除く): 24415400

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 449, 461, 898, 922, 1796, 1844, 2245, 2305, 4490, 4610, 8980, 9220, 11225, 11525, 22450, 23050, 44900, 46100, 206989, 413978, 827956, 1034945, 2069890, 4139780, 5174725, 10349450, 20698900]

約数ペア:

[(1, 20698900), (2, 10349450), (4, 5174725), (5, 4139780), (10, 2069890), (20, 1034945), (25, 827956), (50, 413978), (100, 206989), (449, 46100), (461, 44900), (898, 23050), (922, 22450), (1796, 11525), (1844, 11225), (2245, 9220), (2305, 8980), (4490, 4610)]