20688486

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{5413}}^1$

素因数の和:5445

約数の個数: 48

約数和(自身を含む): 51844464

約数和(自身を除く): 31155978

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 5413, 10826, 16239, 32478, 37891, 70369, 75782, 113673, 140738, 211107, 227346, 265237, 422214, 492583, 530474, 795711, 985166, 1477749, 1591422, 2955498, 3448081, 6896162, 10344243, 20688486]

約数ペア:

[(1, 20688486), (2, 10344243), (3, 6896162), (6, 3448081), (7, 2955498), (13, 1591422), (14, 1477749), (21, 985166), (26, 795711), (39, 530474), (42, 492583), (49, 422214), (78, 265237), (91, 227346), (98, 211107), (147, 140738), (182, 113673), (273, 75782), (294, 70369), (546, 37891), (637, 32478), (1274, 16239), (1911, 10826), (3822, 5413)]