21216850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:367

約数の個数: 48

約数和(自身を含む): 42352200

約数和(自身を除く): 21135350

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 109, 170, 218, 229, 425, 458, 545, 850, 1090, 1145, 1853, 2290, 2725, 3706, 3893, 5450, 5725, 7786, 9265, 11450, 18530, 19465, 24961, 38930, 46325, 49922, 92650, 97325, 124805, 194650, 249610, 424337, 624025, 848674, 1248050, 2121685, 4243370, 10608425, 21216850]

約数ペア:

[(1, 21216850), (2, 10608425), (5, 4243370), (10, 2121685), (17, 1248050), (25, 848674), (34, 624025), (50, 424337), (85, 249610), (109, 194650), (170, 124805), (218, 97325), (229, 92650), (425, 49922), (458, 46325), (545, 38930), (850, 24961), (1090, 19465), (1145, 18530), (1853, 11450), (2290, 9265), (2725, 7786), (3706, 5725), (3893, 5450)]