20958518

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{823}}^1$

素因数の和:956

約数の個数: 32

約数和(自身を含む): 38444544

約数和(自身を除く): 17486026

約数列:

[1, 2, 7, 14, 17, 34, 107, 119, 214, 238, 749, 823, 1498, 1646, 1819, 3638, 5761, 11522, 12733, 13991, 25466, 27982, 88061, 97937, 176122, 195874, 616427, 1232854, 1497037, 2994074, 10479259, 20958518]

約数ペア:

[(1, 20958518), (2, 10479259), (7, 2994074), (14, 1497037), (17, 1232854), (34, 616427), (107, 195874), (119, 176122), (214, 97937), (238, 88061), (749, 27982), (823, 25466), (1498, 13991), (1646, 12733), (1819, 11522), (3638, 5761)]