20416928

素因数分解:

$2^5\times 7^2\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:502

約数の個数: 72

約数和(自身を含む): 48478500

約数和(自身を除く): 28061572

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 49, 56, 58, 98, 112, 116, 196, 203, 224, 232, 392, 406, 449, 464, 784, 812, 898, 928, 1421, 1568, 1624, 1796, 2842, 3143, 3248, 3592, 5684, 6286, 6496, 7184, 11368, 12572, 13021, 14368, 22001, 22736, 25144, 26042, 44002, 45472, 50288, 52084, 88004, 91147, 100576, 104168, 176008, 182294, 208336, 352016, 364588, 416672, 638029, 704032, 729176, 1276058, 1458352, 2552116, 2916704, 5104232, 10208464, 20416928]

約数ペア:

[(1, 20416928), (2, 10208464), (4, 5104232), (7, 2916704), (8, 2552116), (14, 1458352), (16, 1276058), (28, 729176), (29, 704032), (32, 638029), (49, 416672), (56, 364588), (58, 352016), (98, 208336), (112, 182294), (116, 176008), (196, 104168), (203, 100576), (224, 91147), (232, 88004), (392, 52084), (406, 50288), (449, 45472), (464, 44002), (784, 26042), (812, 25144), (898, 22736), (928, 22001), (1421, 14368), (1568, 13021), (1624, 12572), (1796, 11368), (2842, 7184), (3143, 6496), (3248, 6286), (3592, 5684)]