389991580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{7741}}^1$

素因数の和:7990

約数の個数: 48

約数和(自身を含む): 897452640

約数和(自身を除く): 507461060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 229, 458, 916, 1145, 2290, 2519, 4580, 5038, 7741, 10076, 12595, 15482, 25190, 30964, 38705, 50380, 77410, 85151, 154820, 170302, 340604, 425755, 851510, 1703020, 1772689, 3545378, 7090756, 8863445, 17726890, 19499579, 35453780, 38999158, 77998316, 97497895, 194995790, 389991580]

約数ペア:

[(1, 389991580), (2, 194995790), (4, 97497895), (5, 77998316), (10, 38999158), (11, 35453780), (20, 19499579), (22, 17726890), (44, 8863445), (55, 7090756), (110, 3545378), (220, 1772689), (229, 1703020), (458, 851510), (916, 425755), (1145, 340604), (2290, 170302), (2519, 154820), (4580, 85151), (5038, 77410), (7741, 50380), (10076, 38705), (12595, 30964), (15482, 25190)]