21674650

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 42106680

約数和(自身を除く): 20432030

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 97, 109, 194, 205, 218, 410, 485, 545, 970, 1025, 1090, 2050, 2425, 2725, 3977, 4469, 4850, 5450, 7954, 8938, 10573, 19885, 21146, 22345, 39770, 44690, 52865, 99425, 105730, 111725, 198850, 223450, 264325, 433493, 528650, 866986, 2167465, 4334930, 10837325, 21674650]

約数ペア:

[(1, 21674650), (2, 10837325), (5, 4334930), (10, 2167465), (25, 866986), (41, 528650), (50, 433493), (82, 264325), (97, 223450), (109, 198850), (194, 111725), (205, 105730), (218, 99425), (410, 52865), (485, 44690), (545, 39770), (970, 22345), (1025, 21146), (1090, 19885), (2050, 10573), (2425, 8938), (2725, 7954), (3977, 5450), (4469, 4850)]