20656904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2267}}^1$

素因数の和:2357

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 20983576

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 536, 1139, 2267, 2278, 4534, 4556, 9068, 9112, 18136, 38539, 77078, 151889, 154156, 303778, 308312, 607556, 1215112, 2582113, 5164226, 10328452, 20656904]

約数ペア:

[(1, 20656904), (2, 10328452), (4, 5164226), (8, 2582113), (17, 1215112), (34, 607556), (67, 308312), (68, 303778), (134, 154156), (136, 151889), (268, 77078), (536, 38539), (1139, 18136), (2267, 9112), (2278, 9068), (4534, 4556)]