20988268

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{6299}}^1$

素因数の和:6334

約数の個数: 36

約数和(自身を含む): 45246600

約数和(自身を除く): 24258332

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 68, 98, 119, 196, 238, 476, 833, 1666, 3332, 6299, 12598, 25196, 44093, 88186, 107083, 176372, 214166, 308651, 428332, 617302, 749581, 1234604, 1499162, 2998324, 5247067, 10494134, 20988268]

約数ペア:

[(1, 20988268), (2, 10494134), (4, 5247067), (7, 2998324), (14, 1499162), (17, 1234604), (28, 749581), (34, 617302), (49, 428332), (68, 308651), (98, 214166), (119, 176372), (196, 107083), (238, 88186), (476, 44093), (833, 25196), (1666, 12598), (3332, 6299)]