20648650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3413}}^1$

素因数の和:3447

約数の個数: 36

約数和(自身を含む): 42227766

約数和(自身を除く): 21579116

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3413, 6050, 6826, 17065, 34130, 37543, 75086, 85325, 170650, 187715, 375430, 412973, 825946, 938575, 1877150, 2064865, 4129730, 10324325, 20648650]

約数ペア:

[(1, 20648650), (2, 10324325), (5, 4129730), (10, 2064865), (11, 1877150), (22, 938575), (25, 825946), (50, 412973), (55, 375430), (110, 187715), (121, 170650), (242, 85325), (275, 75086), (550, 37543), (605, 34130), (1210, 17065), (3025, 6826), (3413, 6050)]