20656688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2113}}^1$

素因数の和:2181

約数の個数: 40

約数和(自身を含む): 44038848

約数和(自身を除く): 23382160

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2113, 2444, 4226, 4888, 8452, 9776, 16904, 27469, 33808, 54938, 99311, 109876, 198622, 219752, 397244, 439504, 794488, 1291043, 1588976, 2582086, 5164172, 10328344, 20656688]

約数ペア:

[(1, 20656688), (2, 10328344), (4, 5164172), (8, 2582086), (13, 1588976), (16, 1291043), (26, 794488), (47, 439504), (52, 397244), (94, 219752), (104, 198622), (188, 109876), (208, 99311), (376, 54938), (611, 33808), (752, 27469), (1222, 16904), (2113, 9776), (2444, 8452), (4226, 4888)]